./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI --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 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:50:37,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:50:37,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:50:37,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:50:37,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:50:37,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:50:37,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:50:37,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:50:37,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:50:37,541 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:50:37,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:50:37,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:50:37,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:50:37,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:50:37,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:50:37,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:50:37,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:50:37,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:50:37,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:50:37,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:50:37,550 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:50:37,550 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:50:37,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:50:37,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:50:37,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:50:37,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:50:37,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:50:37,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:50:37,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:50:37,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:50:37,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:50:37,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:50:37,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:50:37,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:50:37,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:50:37,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:50:37,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:50:37,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:50:37,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:50:37,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:50:37,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:50:37,558 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_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 [2023-11-24 21:50:37,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:50:37,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:50:37,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:50:37,833 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:50:37,833 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:50:37,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-24 21:50:40,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:50:41,285 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:50:41,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-24 21:50:41,321 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/data/baca39400/5a11c2a944214fcba7e91b97c25f4fe1/FLAGbbd825c16 [2023-11-24 21:50:41,337 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/data/baca39400/5a11c2a944214fcba7e91b97c25f4fe1 [2023-11-24 21:50:41,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:50:41,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:50:41,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:50:41,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:50:41,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:50:41,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:50:41" (1/1) ... [2023-11-24 21:50:41,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a94062a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:41, skipping insertion in model container [2023-11-24 21:50:41,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:50:41" (1/1) ... [2023-11-24 21:50:41,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:50:42,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:50:42,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:50:42,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:50:42,232 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:50:42,233 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:50:42,241 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:50:42,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42 WrapperNode [2023-11-24 21:50:42,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:50:42,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:50:42,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:50:42,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:50:42,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,357 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-24 21:50:42,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:50:42,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:50:42,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:50:42,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:50:42,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,431 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:50:42,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:50:42,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:50:42,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:50:42,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:50:42,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (1/1) ... [2023-11-24 21:50:42,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:50:42,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:50:42,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:50:42,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23a8f6-170d-4921-8fab-711284c53f30/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:50:42,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:50:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:50:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:50:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:50:42,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:50:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:50:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:50:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:50:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:50:42,563 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:50:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:50:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:50:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:50:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:50:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:50:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:50:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:50:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:50:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:50:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:50:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:50:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:50:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:50:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:50:42,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:50:42,571 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:50:42,749 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:50:42,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:50:43,258 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:50:43,543 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:50:43,543 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:50:43,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:50:43 BoogieIcfgContainer [2023-11-24 21:50:43,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:50:43,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:50:43,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:50:43,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:50:43,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:50:41" (1/3) ... [2023-11-24 21:50:43,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20801360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:50:43, skipping insertion in model container [2023-11-24 21:50:43,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:50:42" (2/3) ... [2023-11-24 21:50:43,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20801360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:50:43, skipping insertion in model container [2023-11-24 21:50:43,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:50:43" (3/3) ... [2023-11-24 21:50:43,560 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2023-11-24 21:50:43,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:50:43,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-24 21:50:43,583 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:50:43,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:50:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 150 flow [2023-11-24 21:50:43,758 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-24 21:50:43,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:50:43,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-11-24 21:50:43,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 67 transitions, 150 flow [2023-11-24 21:50:43,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 63 transitions, 138 flow [2023-11-24 21:50:43,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:50:43,807 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;@6656a3c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:50:43,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 21:50:43,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:50:43,812 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:50:43,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:50:43,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:43,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:50:43,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:43,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash 14199, now seen corresponding path program 1 times [2023-11-24 21:50:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:43,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540985058] [2023-11-24 21:50:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:43,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:44,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540985058] [2023-11-24 21:50:44,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540985058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:44,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:50:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32706708] [2023-11-24 21:50:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:44,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:44,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:44,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:44,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 21:50:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:44,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 21:50:44,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:46,282 INFO L124 PetriNetUnfolderBase]: 4217/7283 cut-off events. [2023-11-24 21:50:46,283 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-24 21:50:46,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13210 conditions, 7283 events. 4217/7283 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 54489 event pairs, 3179 based on Foata normal form. 360/7001 useless extension candidates. Maximal degree in co-relation 13195. Up to 4391 conditions per place. [2023-11-24 21:50:46,385 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-24 21:50:46,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 228 flow [2023-11-24 21:50:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 21:50:46,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 21:50:46,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 21:50:46,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 21:50:46,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:46,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 21:50:46,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:46,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:46,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:46,416 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 138 flow. Second operand 3 states and 149 transitions. [2023-11-24 21:50:46,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 228 flow [2023-11-24 21:50:46,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:50:46,427 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-24 21:50:46,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-24 21:50:46,434 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-24 21:50:46,434 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-24 21:50:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:46,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:46,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:50:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:50:46,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 14200, now seen corresponding path program 1 times [2023-11-24 21:50:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:46,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774220999] [2023-11-24 21:50:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:46,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774220999] [2023-11-24 21:50:46,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774220999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:46,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:50:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070215293] [2023-11-24 21:50:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:46,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:46,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 21:50:46,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:46,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:46,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 21:50:46,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:48,165 INFO L124 PetriNetUnfolderBase]: 4217/7282 cut-off events. [2023-11-24 21:50:48,165 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-24 21:50:48,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13386 conditions, 7282 events. 4217/7282 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 54388 event pairs, 3179 based on Foata normal form. 1/6641 useless extension candidates. Maximal degree in co-relation 13375. Up to 4390 conditions per place. [2023-11-24 21:50:48,247 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-24 21:50:48,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 224 flow [2023-11-24 21:50:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 21:50:48,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 21:50:48,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 21:50:48,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 21:50:48,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:48,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 21:50:48,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:48,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:48,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:48,258 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 149 transitions. [2023-11-24 21:50:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 224 flow [2023-11-24 21:50:48,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:48,271 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-24 21:50:48,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-24 21:50:48,273 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2023-11-24 21:50:48,273 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-24 21:50:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:48,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:48,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:50:48,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:50:48,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:48,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 423439706, now seen corresponding path program 1 times [2023-11-24 21:50:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:48,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607956264] [2023-11-24 21:50:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:48,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:48,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607956264] [2023-11-24 21:50:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607956264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:48,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:48,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12745273] [2023-11-24 21:50:48,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:48,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:48,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 21:50:48,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:48,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:48,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 21:50:48,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:49,724 INFO L124 PetriNetUnfolderBase]: 4221/7245 cut-off events. [2023-11-24 21:50:49,724 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-24 21:50:49,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13358 conditions, 7245 events. 4221/7245 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 54240 event pairs, 3251 based on Foata normal form. 0/6613 useless extension candidates. Maximal degree in co-relation 13347. Up to 4393 conditions per place. [2023-11-24 21:50:49,784 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 36 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-24 21:50:49,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 224 flow [2023-11-24 21:50:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-24 21:50:49,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2023-11-24 21:50:49,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-24 21:50:49,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-24 21:50:49,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:49,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-24 21:50:49,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:49,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:49,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:49,790 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 147 transitions. [2023-11-24 21:50:49,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 224 flow [2023-11-24 21:50:49,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:49,802 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-24 21:50:49,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-24 21:50:49,803 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-24 21:50:49,803 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-24 21:50:49,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:49,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:49,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:50:49,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:50:49,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:49,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:49,804 INFO L85 PathProgramCache]: Analyzing trace with hash 423439707, now seen corresponding path program 1 times [2023-11-24 21:50:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325686345] [2023-11-24 21:50:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325686345] [2023-11-24 21:50:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325686345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:49,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:49,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092434111] [2023-11-24 21:50:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:49,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:49,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:49,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:49,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 21:50:49,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:49,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:49,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 21:50:49,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:51,267 INFO L124 PetriNetUnfolderBase]: 4217/7272 cut-off events. [2023-11-24 21:50:51,267 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-24 21:50:51,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13380 conditions, 7272 events. 4217/7272 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 55015 event pairs, 2503 based on Foata normal form. 5/6648 useless extension candidates. Maximal degree in co-relation 13370. Up to 4384 conditions per place. [2023-11-24 21:50:51,340 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-24 21:50:51,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 220 flow [2023-11-24 21:50:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-24 21:50:51,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-24 21:50:51,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-24 21:50:51,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-24 21:50:51,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:51,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-24 21:50:51,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:51,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:51,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:51,346 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 149 transitions. [2023-11-24 21:50:51,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 220 flow [2023-11-24 21:50:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:51,352 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-24 21:50:51,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-24 21:50:51,354 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-11-24 21:50:51,354 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-24 21:50:51,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:51,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:51,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:50:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:50:51,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:51,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash 423441412, now seen corresponding path program 1 times [2023-11-24 21:50:51,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:51,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941426202] [2023-11-24 21:50:51,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:51,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941426202] [2023-11-24 21:50:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941426202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:51,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:50:51,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44302359] [2023-11-24 21:50:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:51,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:51,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:51,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-24 21:50:51,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:51,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:51,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-24 21:50:51,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:52,439 INFO L124 PetriNetUnfolderBase]: 3311/5485 cut-off events. [2023-11-24 21:50:52,440 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-24 21:50:52,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 5485 events. 3311/5485 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 39413 event pairs, 593 based on Foata normal form. 0/5400 useless extension candidates. Maximal degree in co-relation 10300. Up to 3661 conditions per place. [2023-11-24 21:50:52,493 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 41 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2023-11-24 21:50:52,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 262 flow [2023-11-24 21:50:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2023-11-24 21:50:52,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7960199004975125 [2023-11-24 21:50:52,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2023-11-24 21:50:52,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2023-11-24 21:50:52,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:52,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2023-11-24 21:50:52,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:52,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:52,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:52,500 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 160 transitions. [2023-11-24 21:50:52,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 262 flow [2023-11-24 21:50:52,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:52,506 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 120 flow [2023-11-24 21:50:52,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-24 21:50:52,509 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-11-24 21:50:52,509 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 120 flow [2023-11-24 21:50:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:52,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:52,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:50:52,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:52,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 373774225, now seen corresponding path program 1 times [2023-11-24 21:50:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:52,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404505720] [2023-11-24 21:50:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404505720] [2023-11-24 21:50:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404505720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:52,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:52,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20284583] [2023-11-24 21:50:52,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:52,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:52,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 21:50:52,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 21:50:52,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:53,646 INFO L124 PetriNetUnfolderBase]: 2920/5209 cut-off events. [2023-11-24 21:50:53,647 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-24 21:50:53,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 5209 events. 2920/5209 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 38282 event pairs, 1356 based on Foata normal form. 0/4983 useless extension candidates. Maximal degree in co-relation 9634. Up to 3460 conditions per place. [2023-11-24 21:50:53,696 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-24 21:50:53,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 210 flow [2023-11-24 21:50:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-24 21:50:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-24 21:50:53,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-24 21:50:53,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-24 21:50:53,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:53,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-24 21:50:53,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:53,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:53,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:53,703 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 144 transitions. [2023-11-24 21:50:53,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 210 flow [2023-11-24 21:50:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:53,706 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-24 21:50:53,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-24 21:50:53,710 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-11-24 21:50:53,711 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-24 21:50:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:53,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:50:53,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash 373774226, now seen corresponding path program 1 times [2023-11-24 21:50:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972509323] [2023-11-24 21:50:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:53,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972509323] [2023-11-24 21:50:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972509323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135918567] [2023-11-24 21:50:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:53,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 21:50:53,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:53,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 21:50:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:54,713 INFO L124 PetriNetUnfolderBase]: 2903/5128 cut-off events. [2023-11-24 21:50:54,713 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 21:50:54,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9409 conditions, 5128 events. 2903/5128 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 37233 event pairs, 1884 based on Foata normal form. 12/4918 useless extension candidates. Maximal degree in co-relation 9399. Up to 3431 conditions per place. [2023-11-24 21:50:54,756 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-24 21:50:54,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2023-11-24 21:50:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 21:50:54,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-24 21:50:54,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 21:50:54,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 21:50:54,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:54,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 21:50:54,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:54,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:54,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:54,763 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 146 transitions. [2023-11-24 21:50:54,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2023-11-24 21:50:54,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:54,771 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-24 21:50:54,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-24 21:50:54,772 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-11-24 21:50:54,772 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-24 21:50:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:54,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:54,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:54,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:50:54,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:54,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1741821193, now seen corresponding path program 1 times [2023-11-24 21:50:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615311706] [2023-11-24 21:50:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:54,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:54,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615311706] [2023-11-24 21:50:54,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615311706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:54,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:54,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:54,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834194191] [2023-11-24 21:50:54,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:54,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:54,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:54,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-24 21:50:54,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:54,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:54,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-24 21:50:54,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:55,641 INFO L124 PetriNetUnfolderBase]: 2978/5159 cut-off events. [2023-11-24 21:50:55,642 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 21:50:55,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 5159 events. 2978/5159 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 36935 event pairs, 1424 based on Foata normal form. 0/5001 useless extension candidates. Maximal degree in co-relation 9541. Up to 3426 conditions per place. [2023-11-24 21:50:55,676 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-24 21:50:55,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 204 flow [2023-11-24 21:50:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-24 21:50:55,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-24 21:50:55,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-24 21:50:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-24 21:50:55,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:55,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-24 21:50:55,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:55,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:55,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:55,682 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 144 transitions. [2023-11-24 21:50:55,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 204 flow [2023-11-24 21:50:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:55,686 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-24 21:50:55,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-24 21:50:55,689 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-11-24 21:50:55,689 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-24 21:50:55,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:55,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:55,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:50:55,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1741821192, now seen corresponding path program 1 times [2023-11-24 21:50:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062707806] [2023-11-24 21:50:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:55,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:55,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062707806] [2023-11-24 21:50:55,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062707806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:55,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:55,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:50:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165766773] [2023-11-24 21:50:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:50:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:50:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:50:55,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-24 21:50:55,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:55,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:55,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-24 21:50:55,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:56,551 INFO L124 PetriNetUnfolderBase]: 2903/5108 cut-off events. [2023-11-24 21:50:56,551 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-24 21:50:56,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9413 conditions, 5108 events. 2903/5108 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37025 event pairs, 920 based on Foata normal form. 36/5010 useless extension candidates. Maximal degree in co-relation 9403. Up to 3315 conditions per place. [2023-11-24 21:50:56,591 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-24 21:50:56,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 200 flow [2023-11-24 21:50:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:50:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:50:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 21:50:56,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263681592039801 [2023-11-24 21:50:56,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 21:50:56,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 21:50:56,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:56,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 21:50:56,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:56,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:56,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:56,596 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 146 transitions. [2023-11-24 21:50:56,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 200 flow [2023-11-24 21:50:56,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:56,599 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-24 21:50:56,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-24 21:50:56,600 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-11-24 21:50:56,601 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-24 21:50:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:50:56,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:56,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -794758617, now seen corresponding path program 1 times [2023-11-24 21:50:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:56,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144800509] [2023-11-24 21:50:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:56,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144800509] [2023-11-24 21:50:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144800509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:50:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575647022] [2023-11-24 21:50:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:57,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:50:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:57,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:50:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:50:58,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-24 21:50:58,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 9 states, 9 states have (on average 36.77777777777778) internal successors, (331), 9 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:58,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:58,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-24 21:50:58,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:50:59,245 INFO L124 PetriNetUnfolderBase]: 3661/5632 cut-off events. [2023-11-24 21:50:59,245 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-24 21:50:59,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 5632 events. 3661/5632 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35583 event pairs, 150 based on Foata normal form. 180/5758 useless extension candidates. Maximal degree in co-relation 10985. Up to 3384 conditions per place. [2023-11-24 21:50:59,278 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 47 selfloop transitions, 5 changer transitions 13/88 dead transitions. [2023-11-24 21:50:59,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 320 flow [2023-11-24 21:50:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:50:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:50:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2023-11-24 21:50:59,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455223880597015 [2023-11-24 21:50:59,281 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2023-11-24 21:50:59,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2023-11-24 21:50:59,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:50:59,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2023-11-24 21:50:59,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:59,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:59,286 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:59,286 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 8 states and 346 transitions. [2023-11-24 21:50:59,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 320 flow [2023-11-24 21:50:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:50:59,293 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 114 flow [2023-11-24 21:50:59,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-11-24 21:50:59,296 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2023-11-24 21:50:59,296 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 114 flow [2023-11-24 21:50:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.77777777777778) internal successors, (331), 9 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:50:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:50:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:50:59,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:50:59,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:50:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -794757401, now seen corresponding path program 1 times [2023-11-24 21:50:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:50:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731274120] [2023-11-24 21:50:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:50:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:50:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:50:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:50:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:50:59,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731274120] [2023-11-24 21:50:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731274120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:50:59,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:50:59,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:50:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125299591] [2023-11-24 21:50:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:50:59,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:50:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:50:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:50:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:50:59,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-11-24 21:50:59,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:50:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:50:59,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-11-24 21:50:59,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:51:05,978 INFO L124 PetriNetUnfolderBase]: 36977/53411 cut-off events. [2023-11-24 21:51:05,978 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2023-11-24 21:51:06,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105633 conditions, 53411 events. 36977/53411 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 392437 event pairs, 8591 based on Foata normal form. 0/52048 useless extension candidates. Maximal degree in co-relation 105622. Up to 17928 conditions per place. [2023-11-24 21:51:06,249 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 49 selfloop transitions, 8 changer transitions 103/177 dead transitions. [2023-11-24 21:51:06,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 177 transitions, 718 flow [2023-11-24 21:51:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:51:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:51:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 432 transitions. [2023-11-24 21:51:06,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2023-11-24 21:51:06,253 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 432 transitions. [2023-11-24 21:51:06,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 432 transitions. [2023-11-24 21:51:06,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:51:06,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 432 transitions. [2023-11-24 21:51:06,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:06,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:06,265 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:06,265 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 114 flow. Second operand 9 states and 432 transitions. [2023-11-24 21:51:06,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 177 transitions, 718 flow [2023-11-24 21:51:06,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 177 transitions, 696 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 21:51:06,343 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 216 flow [2023-11-24 21:51:06,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-24 21:51:06,344 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-24 21:51:06,344 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 216 flow [2023-11-24 21:51:06,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:06,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:51:06,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:51:06,345 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:51:06,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2116069306, now seen corresponding path program 1 times [2023-11-24 21:51:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227911178] [2023-11-24 21:51:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:51:06,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:06,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227911178] [2023-11-24 21:51:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227911178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:06,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:06,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:51:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121701567] [2023-11-24 21:51:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:06,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:51:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:51:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:51:06,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-24 21:51:06,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:06,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:51:06,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-24 21:51:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:51:11,129 INFO L124 PetriNetUnfolderBase]: 19279/30891 cut-off events. [2023-11-24 21:51:11,130 INFO L125 PetriNetUnfolderBase]: For 29669/30967 co-relation queries the response was YES. [2023-11-24 21:51:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81749 conditions, 30891 events. 19279/30891 cut-off events. For 29669/30967 co-relation queries the response was YES. Maximal size of possible extension queue 1575. Compared 254952 event pairs, 5185 based on Foata normal form. 1189/30720 useless extension candidates. Maximal degree in co-relation 81730. Up to 15985 conditions per place. [2023-11-24 21:51:11,378 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 34 selfloop transitions, 3 changer transitions 43/107 dead transitions. [2023-11-24 21:51:11,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 107 transitions, 544 flow [2023-11-24 21:51:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:51:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2023-11-24 21:51:11,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6844349680170576 [2023-11-24 21:51:11,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 321 transitions. [2023-11-24 21:51:11,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 321 transitions. [2023-11-24 21:51:11,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:51:11,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 321 transitions. [2023-11-24 21:51:11,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.857142857142854) internal successors, (321), 7 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) [2023-11-24 21:51:11,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:11,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:11,386 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 216 flow. Second operand 7 states and 321 transitions. [2023-11-24 21:51:11,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 107 transitions, 544 flow [2023-11-24 21:51:11,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 498 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-24 21:51:11,537 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 205 flow [2023-11-24 21:51:11,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-24 21:51:11,539 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-24 21:51:11,539 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 205 flow [2023-11-24 21:51:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:11,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:51:11,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:11,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:51:11,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:51:11,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1194000893, now seen corresponding path program 1 times [2023-11-24 21:51:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:11,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758832207] [2023-11-24 21:51:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:51:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758832207] [2023-11-24 21:51:11,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758832207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:51:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710679628] [2023-11-24 21:51:11,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:51:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:51:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:51:11,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2023-11-24 21:51:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:11,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:51:11,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2023-11-24 21:51:11,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:51:16,685 INFO L124 PetriNetUnfolderBase]: 23393/34744 cut-off events. [2023-11-24 21:51:16,685 INFO L125 PetriNetUnfolderBase]: For 49082/49247 co-relation queries the response was YES. [2023-11-24 21:51:16,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96515 conditions, 34744 events. 23393/34744 cut-off events. For 49082/49247 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 250723 event pairs, 2756 based on Foata normal form. 890/35619 useless extension candidates. Maximal degree in co-relation 96493. Up to 14517 conditions per place. [2023-11-24 21:51:16,907 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 65 selfloop transitions, 12 changer transitions 78/172 dead transitions. [2023-11-24 21:51:16,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 172 transitions, 971 flow [2023-11-24 21:51:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:51:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:51:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 454 transitions. [2023-11-24 21:51:16,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776119402985075 [2023-11-24 21:51:16,911 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 454 transitions. [2023-11-24 21:51:16,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 454 transitions. [2023-11-24 21:51:16,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:51:16,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 454 transitions. [2023-11-24 21:51:16,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.4) internal successors, (454), 10 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:16,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:16,917 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:16,918 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 205 flow. Second operand 10 states and 454 transitions. [2023-11-24 21:51:16,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 172 transitions, 971 flow [2023-11-24 21:51:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 172 transitions, 935 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-24 21:51:17,453 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 291 flow [2023-11-24 21:51:17,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=291, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-11-24 21:51:17,454 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-11-24 21:51:17,454 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 291 flow [2023-11-24 21:51:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:51:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:51:17,456 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:51:17,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1182266998, now seen corresponding path program 1 times [2023-11-24 21:51:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492622551] [2023-11-24 21:51:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:51:17,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:17,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492622551] [2023-11-24 21:51:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492622551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:17,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:51:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626841021] [2023-11-24 21:51:17,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:51:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:51:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:51:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-24 21:51:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:51:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-24 21:51:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:51:24,132 INFO L124 PetriNetUnfolderBase]: 31869/48361 cut-off events. [2023-11-24 21:51:24,133 INFO L125 PetriNetUnfolderBase]: For 46722/48876 co-relation queries the response was YES. [2023-11-24 21:51:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120211 conditions, 48361 events. 31869/48361 cut-off events. For 46722/48876 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 370368 event pairs, 4620 based on Foata normal form. 2220/49078 useless extension candidates. Maximal degree in co-relation 120185. Up to 26273 conditions per place. [2023-11-24 21:51:24,573 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 57 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2023-11-24 21:51:24,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 513 flow [2023-11-24 21:51:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:51:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:51:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2023-11-24 21:51:24,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238805970149254 [2023-11-24 21:51:24,576 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 194 transitions. [2023-11-24 21:51:24,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 194 transitions. [2023-11-24 21:51:24,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:51:24,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 194 transitions. [2023-11-24 21:51:24,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:24,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:24,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:24,579 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 291 flow. Second operand 4 states and 194 transitions. [2023-11-24 21:51:24,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 513 flow [2023-11-24 21:51:25,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 493 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-24 21:51:25,411 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 317 flow [2023-11-24 21:51:25,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-24 21:51:25,412 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-11-24 21:51:25,413 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 317 flow [2023-11-24 21:51:25,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:25,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:51:25,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:25,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:51:25,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:51:25,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1504654265, now seen corresponding path program 1 times [2023-11-24 21:51:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488755541] [2023-11-24 21:51:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:51:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:25,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488755541] [2023-11-24 21:51:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488755541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:25,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:25,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:51:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440063828] [2023-11-24 21:51:25,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:25,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:51:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:51:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:51:25,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 67 [2023-11-24 21:51:25,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:51:25,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:51:25,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 67 [2023-11-24 21:51:25,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand