./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/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_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/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_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/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 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:30:19,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:30:19,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:30:19,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:30:19,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:30:19,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:30:19,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:30:19,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:30:19,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:30:19,279 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:30:19,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:30:19,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:30:19,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:30:19,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:30:19,284 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:30:19,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:30:19,285 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:30:19,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:30:19,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:30:19,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:30:19,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:30:19,287 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:30:19,288 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:30:19,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:30:19,289 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:30:19,289 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:30:19,289 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:30:19,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:30:19,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:30:19,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:30:19,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:30:19,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:30:19,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:30:19,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:30:19,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:30:19,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:30:19,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:30:19,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:30:19,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:30:19,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:30:19,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:30:19,296 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_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf [2023-11-24 21:30:19,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:30:19,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:30:19,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:30:19,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:30:19,648 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:30:19,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2023-11-24 21:30:22,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:30:23,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:30:23,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2023-11-24 21:30:23,211 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/data/71799cc22/8e6a058c29b345e3ae57d4dcfb2f02b9/FLAG4ebd9bcbe [2023-11-24 21:30:23,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/data/71799cc22/8e6a058c29b345e3ae57d4dcfb2f02b9 [2023-11-24 21:30:23,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:30:23,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:30:23,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:30:23,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:30:23,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:30:23,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:30:23" (1/1) ... [2023-11-24 21:30:23,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786746a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:23, skipping insertion in model container [2023-11-24 21:30:23,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:30:23" (1/1) ... [2023-11-24 21:30:23,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:30:23,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:30:23,927 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:30:24,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:30:24,089 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:30:24,089 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:30:24,098 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:30:24,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24 WrapperNode [2023-11-24 21:30:24,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:30:24,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:30:24,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:30:24,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:30:24,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,228 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 167 [2023-11-24 21:30:24,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:30:24,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:30:24,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:30:24,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:30:24,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,289 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 21:30:24,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:30:24,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:30:24,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:30:24,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:30:24,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (1/1) ... [2023-11-24 21:30:24,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:30:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:30:24,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:30:24,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd3ddb1b-1800-45c8-8cb0-4f6d78a0e9f6/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:30:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:30:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:30:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:30:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:30:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:30:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:30:24,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:30:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:30:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:30:24,406 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:30:24,408 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:30:24,408 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:30:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:30:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:30:24,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:30:24,409 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:30:24,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:30:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:30:24,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:30:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:30:24,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:30:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:30:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:30:24,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:30:24,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:30:24,414 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 21:30:24,585 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:30:24,588 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:30:25,096 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:30:25,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:30:25,342 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:30:25,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:30:25 BoogieIcfgContainer [2023-11-24 21:30:25,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:30:25,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:30:25,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:30:25,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:30:25,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:30:23" (1/3) ... [2023-11-24 21:30:25,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b5c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:30:25, skipping insertion in model container [2023-11-24 21:30:25,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:30:24" (2/3) ... [2023-11-24 21:30:25,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b5c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:30:25, skipping insertion in model container [2023-11-24 21:30:25,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:30:25" (3/3) ... [2023-11-24 21:30:25,354 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_tso.oepc.i [2023-11-24 21:30:25,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:30:25,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-24 21:30:25,378 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:30:25,510 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:30:25,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 148 flow [2023-11-24 21:30:25,626 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-24 21:30:25,626 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:30:25,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-24 21:30:25,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 66 transitions, 148 flow [2023-11-24 21:30:25,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 136 flow [2023-11-24 21:30:25,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:30:25,654 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;@488933cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:30:25,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 21:30:25,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:30:25,658 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:30:25,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:30:25,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:25,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:30:25,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:25,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash 14203, now seen corresponding path program 1 times [2023-11-24 21:30:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548841824] [2023-11-24 21:30:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:26,032 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 21:30:26,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548841824] [2023-11-24 21:30:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548841824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:26,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:26,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827247055] [2023-11-24 21:30:26,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:26,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:26,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:26,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 21:30:26,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:26,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:26,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:27,716 INFO L124 PetriNetUnfolderBase]: 3508/6014 cut-off events. [2023-11-24 21:30:27,717 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-24 21:30:27,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10999 conditions, 6014 events. 3508/6014 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 44519 event pairs, 2752 based on Foata normal form. 270/5699 useless extension candidates. Maximal degree in co-relation 10984. Up to 3825 conditions per place. [2023-11-24 21:30:27,859 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 35 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-24 21:30:27,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 222 flow [2023-11-24 21:30:27,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-24 21:30:27,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-24 21:30:27,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-24 21:30:27,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-24 21:30:27,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:27,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-24 21:30:27,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:30:27,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:27,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:27,899 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 136 flow. Second operand 3 states and 145 transitions. [2023-11-24 21:30:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 222 flow [2023-11-24 21:30:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:30:27,916 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-24 21:30:27,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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 21:30:27,921 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-24 21:30:27,921 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-24 21:30:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 21:30:27,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:27,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:30:27,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:30:27,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:27,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:27,923 INFO L85 PathProgramCache]: Analyzing trace with hash 14204, now seen corresponding path program 1 times [2023-11-24 21:30:27,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619018972] [2023-11-24 21:30:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:27,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:28,097 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 21:30:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619018972] [2023-11-24 21:30:28,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619018972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:28,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:28,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:28,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425794782] [2023-11-24 21:30:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:28,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:28,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:28,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:30:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 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 21:30:28,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:28,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:30:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:29,615 INFO L124 PetriNetUnfolderBase]: 3508/6013 cut-off events. [2023-11-24 21:30:29,615 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-24 21:30:29,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 6013 events. 3508/6013 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 44543 event pairs, 2752 based on Foata normal form. 1/5429 useless extension candidates. Maximal degree in co-relation 11119. Up to 3824 conditions per place. [2023-11-24 21:30:29,695 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 34 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-24 21:30:29,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 218 flow [2023-11-24 21:30:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-24 21:30:29,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-24 21:30:29,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-24 21:30:29,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-24 21:30:29,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:29,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-24 21:30:29,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:30:29,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:29,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:29,703 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 145 transitions. [2023-11-24 21:30:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 218 flow [2023-11-24 21:30:29,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:29,718 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-24 21:30:29,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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 21:30:29,720 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-24 21:30:29,720 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-24 21:30:29,721 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 21:30:29,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:29,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:29,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:30:29,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:29,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash 423562300, now seen corresponding path program 1 times [2023-11-24 21:30:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193111195] [2023-11-24 21:30:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:29,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:29,817 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 21:30:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193111195] [2023-11-24 21:30:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193111195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:29,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159214200] [2023-11-24 21:30:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:29,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:29,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:29,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:29,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:29,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:29,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 21:30:29,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:29,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:31,117 INFO L124 PetriNetUnfolderBase]: 3510/5966 cut-off events. [2023-11-24 21:30:31,117 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-24 21:30:31,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11088 conditions, 5966 events. 3510/5966 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43948 event pairs, 2797 based on Foata normal form. 0/5387 useless extension candidates. Maximal degree in co-relation 11077. Up to 3825 conditions per place. [2023-11-24 21:30:31,192 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 35 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-24 21:30:31,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 218 flow [2023-11-24 21:30:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 21:30:31,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:30:31,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 21:30:31,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 21:30:31,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:31,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 21:30:31,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 21:30:31,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:31,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:31,203 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 143 transitions. [2023-11-24 21:30:31,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 218 flow [2023-11-24 21:30:31,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:31,220 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-24 21:30:31,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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 21:30:31,222 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-11-24 21:30:31,222 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-24 21:30:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 21:30:31,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:31,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:31,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:30:31,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:31,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash 423562301, now seen corresponding path program 1 times [2023-11-24 21:30:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:31,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80581204] [2023-11-24 21:30:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:31,342 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 21:30:31,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:31,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80581204] [2023-11-24 21:30:31,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80581204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:31,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355124444] [2023-11-24 21:30:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:31,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:31,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:30:31,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 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 21:30:31,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:31,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:30:31,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:32,536 INFO L124 PetriNetUnfolderBase]: 3508/6007 cut-off events. [2023-11-24 21:30:32,537 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-24 21:30:32,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 6007 events. 3508/6007 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 44741 event pairs, 2220 based on Foata normal form. 3/5433 useless extension candidates. Maximal degree in co-relation 11116. Up to 3820 conditions per place. [2023-11-24 21:30:32,599 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 34 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-24 21:30:32,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 214 flow [2023-11-24 21:30:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-24 21:30:32,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-24 21:30:32,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-24 21:30:32,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-24 21:30:32,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:32,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-24 21:30:32,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:30:32,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:32,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:32,611 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 145 transitions. [2023-11-24 21:30:32,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 214 flow [2023-11-24 21:30:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:32,621 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-24 21:30:32,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-24 21:30:32,624 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-24 21:30:32,624 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-24 21:30:32,624 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 21:30:32,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:32,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:30:32,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:32,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -269000213, now seen corresponding path program 1 times [2023-11-24 21:30:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091560616] [2023-11-24 21:30:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:32,727 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 21:30:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091560616] [2023-11-24 21:30:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091560616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:32,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678887955] [2023-11-24 21:30:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:32,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:32,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:32,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:32,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 21:30:32,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:32,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:32,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:33,858 INFO L124 PetriNetUnfolderBase]: 3530/6014 cut-off events. [2023-11-24 21:30:33,858 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-24 21:30:33,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11170 conditions, 6014 events. 3530/6014 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 45132 event pairs, 1608 based on Foata normal form. 0/5471 useless extension candidates. Maximal degree in co-relation 11160. Up to 3827 conditions per place. [2023-11-24 21:30:34,040 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 35 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-24 21:30:34,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 214 flow [2023-11-24 21:30:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 21:30:34,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:30:34,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 21:30:34,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 21:30:34,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:34,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 21:30:34,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 21:30:34,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:34,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:34,047 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 143 transitions. [2023-11-24 21:30:34,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 214 flow [2023-11-24 21:30:34,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:34,054 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-24 21:30:34,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-24 21:30:34,056 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-11-24 21:30:34,056 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-24 21:30:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 21:30:34,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:34,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:34,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:30:34,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:34,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -269000212, now seen corresponding path program 1 times [2023-11-24 21:30:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600662341] [2023-11-24 21:30:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:34,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:34,160 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 21:30:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600662341] [2023-11-24 21:30:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600662341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:34,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831406060] [2023-11-24 21:30:34,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:34,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:30:34,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 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 21:30:34,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:34,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:30:34,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:35,442 INFO L124 PetriNetUnfolderBase]: 3508/5932 cut-off events. [2023-11-24 21:30:35,442 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-24 21:30:35,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11063 conditions, 5932 events. 3508/5932 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 44436 event pairs, 1941 based on Foata normal form. 15/5410 useless extension candidates. Maximal degree in co-relation 11053. Up to 3790 conditions per place. [2023-11-24 21:30:35,497 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 34 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-24 21:30:35,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 210 flow [2023-11-24 21:30:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-24 21:30:35,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-24 21:30:35,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-24 21:30:35,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-24 21:30:35,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:35,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-24 21:30:35,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:30:35,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:35,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:35,502 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 145 transitions. [2023-11-24 21:30:35,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 210 flow [2023-11-24 21:30:35,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:35,506 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-24 21:30:35,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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 21:30:35,508 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-24 21:30:35,508 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-24 21:30:35,508 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 21:30:35,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:35,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:35,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:30:35,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:35,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash -268998178, now seen corresponding path program 1 times [2023-11-24 21:30:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:35,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587079495] [2023-11-24 21:30:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:35,649 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 21:30:35,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587079495] [2023-11-24 21:30:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587079495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:30:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458746699] [2023-11-24 21:30:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:35,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-24 21:30:35,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 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 21:30:35,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-24 21:30:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:36,489 INFO L124 PetriNetUnfolderBase]: 2754/4596 cut-off events. [2023-11-24 21:30:36,489 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-24 21:30:36,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 4596 events. 2754/4596 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 32443 event pairs, 492 based on Foata normal form. 0/4515 useless extension candidates. Maximal degree in co-relation 8642. Up to 3064 conditions per place. [2023-11-24 21:30:36,546 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 39 selfloop transitions, 2 changer transitions 2/70 dead transitions. [2023-11-24 21:30:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 246 flow [2023-11-24 21:30:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-24 21:30:36,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7828282828282829 [2023-11-24 21:30:36,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-24 21:30:36,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-24 21:30:36,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:36,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-24 21:30:36,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 21:30:36,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:36,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:36,556 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 155 transitions. [2023-11-24 21:30:36,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 246 flow [2023-11-24 21:30:36,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:36,567 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 114 flow [2023-11-24 21:30:36,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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=114, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-11-24 21:30:36,569 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-24 21:30:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 114 flow [2023-11-24 21:30:36,570 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 21:30:36,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:36,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:30:36,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:36,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 624063396, now seen corresponding path program 1 times [2023-11-24 21:30:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076036054] [2023-11-24 21:30:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:36,659 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 21:30:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076036054] [2023-11-24 21:30:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076036054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:36,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111313701] [2023-11-24 21:30:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:36,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:36,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:36,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 114 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 21:30:36,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:36,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:36,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:37,617 INFO L124 PetriNetUnfolderBase]: 2532/4320 cut-off events. [2023-11-24 21:30:37,617 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-11-24 21:30:37,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8212 conditions, 4320 events. 2532/4320 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 30263 event pairs, 1191 based on Foata normal form. 0/4164 useless extension candidates. Maximal degree in co-relation 8201. Up to 2985 conditions per place. [2023-11-24 21:30:37,658 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-24 21:30:37,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 200 flow [2023-11-24 21:30:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-24 21:30:37,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2023-11-24 21:30:37,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-24 21:30:37,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-24 21:30:37,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:37,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-24 21:30:37,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:30:37,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:37,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:37,665 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 114 flow. Second operand 3 states and 140 transitions. [2023-11-24 21:30:37,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 200 flow [2023-11-24 21:30:37,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:37,672 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-24 21:30:37,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, 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 21:30:37,676 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-24 21:30:37,676 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-24 21:30:37,677 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 21:30:37,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:37,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:30:37,678 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:37,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash 624063397, now seen corresponding path program 1 times [2023-11-24 21:30:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607785346] [2023-11-24 21:30:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:37,829 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 21:30:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607785346] [2023-11-24 21:30:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607785346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:37,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:37,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733106456] [2023-11-24 21:30:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:30:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:30:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:30:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:30:37,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 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 21:30:37,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:37,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:30:37,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:38,605 INFO L124 PetriNetUnfolderBase]: 2457/4257 cut-off events. [2023-11-24 21:30:38,605 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-24 21:30:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7932 conditions, 4257 events. 2457/4257 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30194 event pairs, 735 based on Foata normal form. 36/4173 useless extension candidates. Maximal degree in co-relation 7922. Up to 2874 conditions per place. [2023-11-24 21:30:38,653 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 31 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-24 21:30:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 194 flow [2023-11-24 21:30:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 21:30:38,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2023-11-24 21:30:38,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 21:30:38,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 21:30:38,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:38,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 21:30:38,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 21:30:38,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:38,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:30:38,659 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 142 transitions. [2023-11-24 21:30:38,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 194 flow [2023-11-24 21:30:38,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:38,662 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 110 flow [2023-11-24 21:30:38,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-24 21:30:38,664 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-11-24 21:30:38,664 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 110 flow [2023-11-24 21:30:38,664 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 21:30:38,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:38,665 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 21:30:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:30:38,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1479337695, now seen corresponding path program 1 times [2023-11-24 21:30:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:38,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011206628] [2023-11-24 21:30:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:39,816 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 21:30:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011206628] [2023-11-24 21:30:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011206628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:30:39,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121945643] [2023-11-24 21:30:39,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:30:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:39,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:30:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:30:40,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-24 21:30:40,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 9 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 21:30:40,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:40,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-24 21:30:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:41,307 INFO L124 PetriNetUnfolderBase]: 3326/5414 cut-off events. [2023-11-24 21:30:41,307 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-24 21:30:41,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 5414 events. 3326/5414 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 36769 event pairs, 204 based on Foata normal form. 144/5515 useless extension candidates. Maximal degree in co-relation 10284. Up to 2979 conditions per place. [2023-11-24 21:30:41,355 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 47 selfloop transitions, 5 changer transitions 12/86 dead transitions. [2023-11-24 21:30:41,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 314 flow [2023-11-24 21:30:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:30:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:30:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2023-11-24 21:30:41,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382575757575758 [2023-11-24 21:30:41,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 337 transitions. [2023-11-24 21:30:41,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 337 transitions. [2023-11-24 21:30:41,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:41,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 337 transitions. [2023-11-24 21:30:41,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 21:30:41,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:30:41,363 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:30:41,364 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 8 states and 337 transitions. [2023-11-24 21:30:41,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 314 flow [2023-11-24 21:30:41,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:30:41,367 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 112 flow [2023-11-24 21:30:41,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-11-24 21:30:41,369 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-24 21:30:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 112 flow [2023-11-24 21:30:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 21:30:41,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:41,370 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 21:30:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:30:41,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:41,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1479336475, now seen corresponding path program 1 times [2023-11-24 21:30:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:41,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456398157] [2023-11-24 21:30:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:41,632 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 21:30:41,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:41,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456398157] [2023-11-24 21:30:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456398157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:41,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660314222] [2023-11-24 21:30:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:41,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:41,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 112 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 21:30:41,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:41,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:41,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:42,858 INFO L124 PetriNetUnfolderBase]: 3981/6321 cut-off events. [2023-11-24 21:30:42,859 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-11-24 21:30:42,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 6321 events. 3981/6321 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43491 event pairs, 669 based on Foata normal form. 0/6142 useless extension candidates. Maximal degree in co-relation 12245. Up to 2872 conditions per place. [2023-11-24 21:30:42,917 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 32 selfloop transitions, 2 changer transitions 49/105 dead transitions. [2023-11-24 21:30:42,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 398 flow [2023-11-24 21:30:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:30:42,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:30:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 365 transitions. [2023-11-24 21:30:42,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6912878787878788 [2023-11-24 21:30:42,920 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 365 transitions. [2023-11-24 21:30:42,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 365 transitions. [2023-11-24 21:30:42,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:42,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 365 transitions. [2023-11-24 21:30:42,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.625) internal successors, (365), 8 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 21:30:42,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:30:42,926 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 21:30:42,926 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 112 flow. Second operand 8 states and 365 transitions. [2023-11-24 21:30:42,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 398 flow [2023-11-24 21:30:42,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 387 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 21:30:42,930 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 117 flow [2023-11-24 21:30:42,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=117, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-11-24 21:30:42,931 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-24 21:30:42,931 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 117 flow [2023-11-24 21:30:42,931 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 21:30:42,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:42,932 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] [2023-11-24 21:30:42,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:30:42,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:42,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:42,933 INFO L85 PathProgramCache]: Analyzing trace with hash 102274238, now seen corresponding path program 1 times [2023-11-24 21:30:42,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818864913] [2023-11-24 21:30:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:43,674 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 21:30:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818864913] [2023-11-24 21:30:43,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818864913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:30:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435191421] [2023-11-24 21:30:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:43,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:43,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 21:30:43,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:43,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:43,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:44,994 INFO L124 PetriNetUnfolderBase]: 3566/5821 cut-off events. [2023-11-24 21:30:44,994 INFO L125 PetriNetUnfolderBase]: For 1233/1233 co-relation queries the response was YES. [2023-11-24 21:30:45,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 5821 events. 3566/5821 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 41344 event pairs, 929 based on Foata normal form. 144/5934 useless extension candidates. Maximal degree in co-relation 11905. Up to 3913 conditions per place. [2023-11-24 21:30:45,051 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 36 selfloop transitions, 3 changer transitions 35/96 dead transitions. [2023-11-24 21:30:45,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 96 transitions, 381 flow [2023-11-24 21:30:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:30:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:30:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2023-11-24 21:30:45,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948051948051948 [2023-11-24 21:30:45,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 321 transitions. [2023-11-24 21:30:45,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 321 transitions. [2023-11-24 21:30:45,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:45,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 321 transitions. [2023-11-24 21:30:45,057 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 21:30:45,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:45,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:45,059 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 117 flow. Second operand 7 states and 321 transitions. [2023-11-24 21:30:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 96 transitions, 381 flow [2023-11-24 21:30:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 361 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-24 21:30:45,129 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 140 flow [2023-11-24 21:30:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2023-11-24 21:30:45,130 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-24 21:30:45,130 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 140 flow [2023-11-24 21:30:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 21:30:45,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:45,131 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] [2023-11-24 21:30:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:30:45,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:45,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 561190162, now seen corresponding path program 1 times [2023-11-24 21:30:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568221456] [2023-11-24 21:30:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:45,381 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 21:30:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568221456] [2023-11-24 21:30:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568221456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:30:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473151792] [2023-11-24 21:30:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:45,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:30:45,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 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 21:30:45,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:45,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:30:45,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:47,461 INFO L124 PetriNetUnfolderBase]: 9378/13718 cut-off events. [2023-11-24 21:30:47,461 INFO L125 PetriNetUnfolderBase]: For 4561/4561 co-relation queries the response was YES. [2023-11-24 21:30:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31245 conditions, 13718 events. 9378/13718 cut-off events. For 4561/4561 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 88765 event pairs, 1001 based on Foata normal form. 384/13816 useless extension candidates. Maximal degree in co-relation 31228. Up to 8149 conditions per place. [2023-11-24 21:30:47,601 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 55 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2023-11-24 21:30:47,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 350 flow [2023-11-24 21:30:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:30:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:30:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2023-11-24 21:30:47,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-24 21:30:47,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2023-11-24 21:30:47,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2023-11-24 21:30:47,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:47,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2023-11-24 21:30:47,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:30:47,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 21:30:47,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 21:30:47,608 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 140 flow. Second operand 4 states and 188 transitions. [2023-11-24 21:30:47,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 350 flow [2023-11-24 21:30:47,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 341 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:47,694 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 179 flow [2023-11-24 21:30:47,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-11-24 21:30:47,696 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-24 21:30:47,696 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 179 flow [2023-11-24 21:30:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 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 21:30:47,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:47,697 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] [2023-11-24 21:30:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:30:47,697 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:47,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -896635125, now seen corresponding path program 1 times [2023-11-24 21:30:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:47,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932624813] [2023-11-24 21:30:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:48,644 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 21:30:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932624813] [2023-11-24 21:30:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932624813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:48,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097310520] [2023-11-24 21:30:48,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:48,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:48,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:30:48,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 179 flow. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 21:30:48,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:48,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:30:48,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:50,536 INFO L124 PetriNetUnfolderBase]: 6428/10417 cut-off events. [2023-11-24 21:30:50,536 INFO L125 PetriNetUnfolderBase]: For 5226/5539 co-relation queries the response was YES. [2023-11-24 21:30:50,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24943 conditions, 10417 events. 6428/10417 cut-off events. For 5226/5539 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 76826 event pairs, 3292 based on Foata normal form. 193/10022 useless extension candidates. Maximal degree in co-relation 24925. Up to 6444 conditions per place. [2023-11-24 21:30:50,631 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 77 selfloop transitions, 24 changer transitions 0/128 dead transitions. [2023-11-24 21:30:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 593 flow [2023-11-24 21:30:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:30:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:30:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 453 transitions. [2023-11-24 21:30:50,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6863636363636364 [2023-11-24 21:30:50,636 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 453 transitions. [2023-11-24 21:30:50,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 453 transitions. [2023-11-24 21:30:50,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:50,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 453 transitions. [2023-11-24 21:30:50,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 21:30:50,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 21:30:50,642 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 21:30:50,642 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 179 flow. Second operand 10 states and 453 transitions. [2023-11-24 21:30:50,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 593 flow [2023-11-24 21:30:50,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 128 transitions, 579 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:50,651 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 353 flow [2023-11-24 21:30:50,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=353, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-11-24 21:30:50,652 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-11-24 21:30:50,653 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 353 flow [2023-11-24 21:30:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 21:30:50,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:50,653 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] [2023-11-24 21:30:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:30:50,654 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:50,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1426904605, now seen corresponding path program 1 times [2023-11-24 21:30:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625219975] [2023-11-24 21:30:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:50,946 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 21:30:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625219975] [2023-11-24 21:30:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625219975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:30:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771005255] [2023-11-24 21:30:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:50,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:50,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:50,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:30:50,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 353 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 21:30:50,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:50,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:30:50,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:52,778 INFO L124 PetriNetUnfolderBase]: 8573/12690 cut-off events. [2023-11-24 21:30:52,778 INFO L125 PetriNetUnfolderBase]: For 20136/20249 co-relation queries the response was YES. [2023-11-24 21:30:52,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39497 conditions, 12690 events. 8573/12690 cut-off events. For 20136/20249 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 81042 event pairs, 544 based on Foata normal form. 476/12834 useless extension candidates. Maximal degree in co-relation 39473. Up to 6005 conditions per place. [2023-11-24 21:30:52,860 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 84 selfloop transitions, 10 changer transitions 11/124 dead transitions. [2023-11-24 21:30:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 799 flow [2023-11-24 21:30:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2023-11-24 21:30:52,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7242424242424242 [2023-11-24 21:30:52,863 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 239 transitions. [2023-11-24 21:30:52,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 239 transitions. [2023-11-24 21:30:52,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:52,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 239 transitions. [2023-11-24 21:30:52,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 21:30:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:30:52,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 21:30:52,866 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 353 flow. Second operand 5 states and 239 transitions. [2023-11-24 21:30:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 799 flow [2023-11-24 21:30:52,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 751 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-11-24 21:30:52,901 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 304 flow [2023-11-24 21:30:52,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2023-11-24 21:30:52,902 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-11-24 21:30:52,902 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 304 flow [2023-11-24 21:30:52,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 21:30:52,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:52,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:30:52,903 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:52,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:52,903 INFO L85 PathProgramCache]: Analyzing trace with hash 941536915, now seen corresponding path program 1 times [2023-11-24 21:30:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:52,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968347366] [2023-11-24 21:30:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:53,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:53,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968347366] [2023-11-24 21:30:53,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968347366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:53,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:53,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:30:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785872519] [2023-11-24 21:30:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:53,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:30:53,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 21:30:53,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:53,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:30:53,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:54,505 INFO L124 PetriNetUnfolderBase]: 6017/8938 cut-off events. [2023-11-24 21:30:54,505 INFO L125 PetriNetUnfolderBase]: For 18982/19087 co-relation queries the response was YES. [2023-11-24 21:30:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30300 conditions, 8938 events. 6017/8938 cut-off events. For 18982/19087 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 54053 event pairs, 394 based on Foata normal form. 348/8949 useless extension candidates. Maximal degree in co-relation 30272. Up to 2656 conditions per place. [2023-11-24 21:30:54,589 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 93 selfloop transitions, 14 changer transitions 0/126 dead transitions. [2023-11-24 21:30:54,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 804 flow [2023-11-24 21:30:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:30:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:30:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 288 transitions. [2023-11-24 21:30:54,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-24 21:30:54,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 288 transitions. [2023-11-24 21:30:54,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 288 transitions. [2023-11-24 21:30:54,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:54,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 288 transitions. [2023-11-24 21:30:54,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 21:30:54,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:30:54,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:30:54,597 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 304 flow. Second operand 6 states and 288 transitions. [2023-11-24 21:30:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 804 flow [2023-11-24 21:30:54,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 752 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-11-24 21:30:54,632 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 357 flow [2023-11-24 21:30:54,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2023-11-24 21:30:54,633 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2023-11-24 21:30:54,634 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 357 flow [2023-11-24 21:30:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 21:30:54,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:54,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:54,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:30:54,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:54,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 209029622, now seen corresponding path program 1 times [2023-11-24 21:30:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:54,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811400026] [2023-11-24 21:30:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:55,051 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 21:30:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811400026] [2023-11-24 21:30:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811400026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684840792] [2023-11-24 21:30:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:55,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:30:55,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:30:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:30:55,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-24 21:30:55,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 21:30:55,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:55,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-24 21:30:55,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:57,298 INFO L124 PetriNetUnfolderBase]: 7059/11764 cut-off events. [2023-11-24 21:30:57,299 INFO L125 PetriNetUnfolderBase]: For 23059/28186 co-relation queries the response was YES. [2023-11-24 21:30:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35075 conditions, 11764 events. 7059/11764 cut-off events. For 23059/28186 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 88924 event pairs, 1812 based on Foata normal form. 338/11124 useless extension candidates. Maximal degree in co-relation 35048. Up to 4878 conditions per place. [2023-11-24 21:30:57,406 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 67 selfloop transitions, 2 changer transitions 18/124 dead transitions. [2023-11-24 21:30:57,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 773 flow [2023-11-24 21:30:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:30:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:30:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2023-11-24 21:30:57,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-24 21:30:57,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 282 transitions. [2023-11-24 21:30:57,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 282 transitions. [2023-11-24 21:30:57,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:57,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 282 transitions. [2023-11-24 21:30:57,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 21:30:57,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:30:57,414 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:30:57,414 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 357 flow. Second operand 6 states and 282 transitions. [2023-11-24 21:30:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 773 flow [2023-11-24 21:30:57,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 742 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-24 21:30:57,477 INFO L231 Difference]: Finished difference. Result has 87 places, 68 transitions, 343 flow [2023-11-24 21:30:57,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=87, PETRI_TRANSITIONS=68} [2023-11-24 21:30:57,478 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2023-11-24 21:30:57,478 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 68 transitions, 343 flow [2023-11-24 21:30:57,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 21:30:57,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:57,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:57,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:30:57,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:57,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1441920296, now seen corresponding path program 2 times [2023-11-24 21:30:57,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91878696] [2023-11-24 21:30:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:57,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:57,765 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 21:30:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:30:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91878696] [2023-11-24 21:30:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91878696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:57,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:30:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750712995] [2023-11-24 21:30:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:30:57,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:30:57,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:30:57,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:30:57,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:30:57,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 68 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 21:30:57,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:57,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:30:57,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:59,553 INFO L124 PetriNetUnfolderBase]: 9528/13836 cut-off events. [2023-11-24 21:30:59,553 INFO L125 PetriNetUnfolderBase]: For 26385/26588 co-relation queries the response was YES. [2023-11-24 21:30:59,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45838 conditions, 13836 events. 9528/13836 cut-off events. For 26385/26588 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 89017 event pairs, 703 based on Foata normal form. 394/13787 useless extension candidates. Maximal degree in co-relation 45808. Up to 5020 conditions per place. [2023-11-24 21:30:59,656 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 80 selfloop transitions, 18 changer transitions 6/124 dead transitions. [2023-11-24 21:30:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 755 flow [2023-11-24 21:30:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:30:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:30:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2023-11-24 21:30:59,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6861471861471862 [2023-11-24 21:30:59,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2023-11-24 21:30:59,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2023-11-24 21:30:59,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:59,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2023-11-24 21:30:59,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 21:30:59,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:59,662 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:59,662 INFO L175 Difference]: Start difference. First operand has 87 places, 68 transitions, 343 flow. Second operand 7 states and 317 transitions. [2023-11-24 21:30:59,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 755 flow [2023-11-24 21:30:59,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 719 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-24 21:30:59,882 INFO L231 Difference]: Finished difference. Result has 86 places, 69 transitions, 377 flow [2023-11-24 21:30:59,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=86, PETRI_TRANSITIONS=69} [2023-11-24 21:30:59,883 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2023-11-24 21:30:59,884 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 69 transitions, 377 flow [2023-11-24 21:30:59,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 21:30:59,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:59,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:59,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:30:59,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:30:59,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 697363322, now seen corresponding path program 1 times [2023-11-24 21:30:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:30:59,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220590042] [2023-11-24 21:30:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:59,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:30:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:31:00,224 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 21:31:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:31:00,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220590042] [2023-11-24 21:31:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220590042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:31:00,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:31:00,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:31:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025454667] [2023-11-24 21:31:00,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:31:00,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:31:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:31:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:31:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:31:00,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-24 21:31:00,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 69 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 21:31:00,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:31:00,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-24 21:31:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:31:02,168 INFO L124 PetriNetUnfolderBase]: 9328/15945 cut-off events. [2023-11-24 21:31:02,168 INFO L125 PetriNetUnfolderBase]: For 37045/42218 co-relation queries the response was YES. [2023-11-24 21:31:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47112 conditions, 15945 events. 9328/15945 cut-off events. For 37045/42218 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 136574 event pairs, 1372 based on Foata normal form. 297/14330 useless extension candidates. Maximal degree in co-relation 47085. Up to 6174 conditions per place. [2023-11-24 21:31:02,301 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 54 selfloop transitions, 2 changer transitions 12/107 dead transitions. [2023-11-24 21:31:02,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 645 flow [2023-11-24 21:31:02,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:31:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:31:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2023-11-24 21:31:02,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:31:02,303 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 264 transitions. [2023-11-24 21:31:02,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 264 transitions. [2023-11-24 21:31:02,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:31:02,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 264 transitions. [2023-11-24 21:31:02,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 21:31:02,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:31:02,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 21:31:02,306 INFO L175 Difference]: Start difference. First operand has 86 places, 69 transitions, 377 flow. Second operand 6 states and 264 transitions. [2023-11-24 21:31:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 645 flow [2023-11-24 21:31:02,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 582 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-24 21:31:02,785 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 341 flow [2023-11-24 21:31:02,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2023-11-24 21:31:02,785 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 17 predicate places. [2023-11-24 21:31:02,786 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 341 flow [2023-11-24 21:31:02,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 21:31:02,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:31:02,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:31:02,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:31:02,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:31:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:31:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 566696910, now seen corresponding path program 2 times [2023-11-24 21:31:02,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:31:02,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483067952] [2023-11-24 21:31:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:31:02,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:31:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:31:03,373 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 21:31:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:31:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483067952] [2023-11-24 21:31:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483067952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:31:03,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:31:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:31:03,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391237166] [2023-11-24 21:31:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:31:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:31:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:31:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:31:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:31:03,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2023-11-24 21:31:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 21:31:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:31:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2023-11-24 21:31:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand