./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx --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 a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:18:04,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:18:04,389 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:18:04,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:18:04,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:18:04,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:18:04,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:18:04,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:18:04,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:18:04,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:18:04,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:18:04,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:18:04,445 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:18:04,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:18:04,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:18:04,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:18:04,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:18:04,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:18:04,450 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:18:04,450 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:18:04,451 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:18:04,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:18:04,452 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:18:04,452 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:18:04,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:18:04,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:18:04,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:18:04,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:18:04,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:18:04,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:18:04,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:04,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:18:04,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:18:04,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:18:04,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:18:04,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:18:04,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:18:04,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:18:04,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:18:04,460 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_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6d0914923ba77f2cbf67d52dc6ec759519359118cb2f8fd5f254f95bf2b938e [2023-11-21 22:18:04,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:18:04,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:18:04,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:18:04,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:18:04,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:18:04,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:18:08,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:18:08,400 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:18:08,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/sv-benchmarks/c/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:18:08,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/data/b0547a26b/fff946553011480384222b6b29382c56/FLAG6a9abf01d [2023-11-21 22:18:08,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/data/b0547a26b/fff946553011480384222b6b29382c56 [2023-11-21 22:18:08,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:18:08,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:18:08,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:08,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:18:08,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:18:08,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:08" (1/1) ... [2023-11-21 22:18:08,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4f7c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:08, skipping insertion in model container [2023-11-21 22:18:08,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:08" (1/1) ... [2023-11-21 22:18:08,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:18:09,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:09,026 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:18:09,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:09,130 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:09,130 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:18:09,138 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:18:09,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09 WrapperNode [2023-11-21 22:18:09,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:09,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:09,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:18:09,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:18:09,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,196 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2023-11-21 22:18:09,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:09,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:18:09,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:18:09,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:18:09,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:18:09,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:18:09,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:18:09,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:18:09,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (1/1) ... [2023-11-21 22:18:09,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:09,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:18:09,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2db5a36-e1e1-4284-bcb0-096302b0158d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:18:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:18:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:18:09,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:18:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:18:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:18:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:18:09,342 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:18:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:18:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:18:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:18:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:18:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:18:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:18:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:18:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:18:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:18:09,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:18:09,349 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:18:09,624 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:18:09,627 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:18:10,077 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:18:10,319 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:18:10,320 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:18:10,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:10 BoogieIcfgContainer [2023-11-21 22:18:10,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:18:10,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:18:10,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:18:10,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:18:10,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:18:08" (1/3) ... [2023-11-21 22:18:10,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acc79f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:10, skipping insertion in model container [2023-11-21 22:18:10,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:09" (2/3) ... [2023-11-21 22:18:10,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4acc79f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:10, skipping insertion in model container [2023-11-21 22:18:10,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:10" (3/3) ... [2023-11-21 22:18:10,330 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 22:18:10,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:18:10,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-21 22:18:10,350 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:18:10,416 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:18:10,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 148 flow [2023-11-21 22:18:10,489 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-21 22:18:10,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:18:10,494 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 5. Compared 129 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. [2023-11-21 22:18:10,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 66 transitions, 148 flow [2023-11-21 22:18:10,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 136 flow [2023-11-21 22:18:10,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:18:10,529 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;@35ecb826, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:18:10,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 22:18:10,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:18:10,533 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:18:10,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:18:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:18:10,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:10,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash 14080, now seen corresponding path program 1 times [2023-11-21 22:18:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981722880] [2023-11-21 22:18:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:10,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:10,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981722880] [2023-11-21 22:18:10,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981722880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:10,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:10,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:18:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271170512] [2023-11-21 22:18:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:10,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:10,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:10,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:18:10,895 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) [2023-11-21 22:18:10,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:10,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:18:10,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:12,542 INFO L124 PetriNetUnfolderBase]: 4217/7238 cut-off events. [2023-11-21 22:18:12,543 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-21 22:18:12,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13165 conditions, 7238 events. 4217/7238 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 53853 event pairs, 3179 based on Foata normal form. 360/6961 useless extension candidates. Maximal degree in co-relation 13150. Up to 4391 conditions per place. [2023-11-21 22:18:12,654 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 36 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-21 22:18:12,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 226 flow [2023-11-21 22:18:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:18:12,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-21 22:18:12,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:18:12,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:18:12,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:12,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:18:12,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:12,687 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) [2023-11-21 22:18:12,688 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) [2023-11-21 22:18:12,690 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 136 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:18:12,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 226 flow [2023-11-21 22:18:12,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:18:12,707 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-21 22:18:12,709 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} [2023-11-21 22:18:12,715 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-21 22:18:12,716 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-21 22:18:12,716 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) [2023-11-21 22:18:12,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:12,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:18:12,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:18:12,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:12,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 14081, now seen corresponding path program 1 times [2023-11-21 22:18:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:12,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308979379] [2023-11-21 22:18:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:12,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:12,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308979379] [2023-11-21 22:18:12,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308979379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:12,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:18:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930164257] [2023-11-21 22:18:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:12,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:18:12,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 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) [2023-11-21 22:18:12,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:12,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:18:12,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:14,283 INFO L124 PetriNetUnfolderBase]: 4217/7192 cut-off events. [2023-11-21 22:18:14,284 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-21 22:18:14,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13297 conditions, 7192 events. 4217/7192 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 53456 event pairs, 2965 based on Foata normal form. 0/6558 useless extension candidates. Maximal degree in co-relation 13285. Up to 5783 conditions per place. [2023-11-21 22:18:14,357 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 29 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-21 22:18:14,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 61 transitions, 196 flow [2023-11-21 22:18:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2023-11-21 22:18:14,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6919191919191919 [2023-11-21 22:18:14,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 137 transitions. [2023-11-21 22:18:14,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 137 transitions. [2023-11-21 22:18:14,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:14,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 137 transitions. [2023-11-21 22:18:14,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:14,363 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) [2023-11-21 22:18:14,364 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) [2023-11-21 22:18:14,364 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 137 transitions. [2023-11-21 22:18:14,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 61 transitions, 196 flow [2023-11-21 22:18:14,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:14,376 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-21 22:18:14,376 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} [2023-11-21 22:18:14,377 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-21 22:18:14,378 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-21 22:18:14,378 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) [2023-11-21 22:18:14,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:14,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:18:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:18:14,379 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:14,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 419892173, now seen corresponding path program 1 times [2023-11-21 22:18:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852776833] [2023-11-21 22:18:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:14,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852776833] [2023-11-21 22:18:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852776833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730389739] [2023-11-21 22:18:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:14,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:14,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:18:14,491 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) [2023-11-21 22:18:14,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:14,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:18:14,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:15,858 INFO L124 PetriNetUnfolderBase]: 4221/7195 cut-off events. [2023-11-21 22:18:15,859 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:18:15,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13133 conditions, 7195 events. 4221/7195 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 53857 event pairs, 2877 based on Foata normal form. 0/6569 useless extension candidates. Maximal degree in co-relation 13122. Up to 4393 conditions per place. [2023-11-21 22:18:15,928 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 36 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-21 22:18:15,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 222 flow [2023-11-21 22:18:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-21 22:18:15,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-21 22:18:15,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-21 22:18:15,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-21 22:18:15,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:15,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-21 22:18:15,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:15,937 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) [2023-11-21 22:18:15,938 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) [2023-11-21 22:18:15,938 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 144 transitions. [2023-11-21 22:18:15,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 222 flow [2023-11-21 22:18:15,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:15,942 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-21 22:18:15,943 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} [2023-11-21 22:18:15,944 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-11-21 22:18:15,944 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-21 22:18:15,945 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) [2023-11-21 22:18:15,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:15,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:18:15,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:18:15,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:15,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash 419893208, now seen corresponding path program 1 times [2023-11-21 22:18:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794083967] [2023-11-21 22:18:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:16,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794083967] [2023-11-21 22:18:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794083967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:16,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:18:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908031342] [2023-11-21 22:18:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:16,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-21 22:18:16,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 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) [2023-11-21 22:18:16,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:16,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-21 22:18:16,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:16,899 INFO L124 PetriNetUnfolderBase]: 3311/5236 cut-off events. [2023-11-21 22:18:16,899 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-21 22:18:16,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 5236 events. 3311/5236 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33482 event pairs, 2177 based on Foata normal form. 0/5169 useless extension candidates. Maximal degree in co-relation 10051. Up to 3661 conditions per place. [2023-11-21 22:18:16,947 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 41 selfloop transitions, 2 changer transitions 2/75 dead transitions. [2023-11-21 22:18:16,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 262 flow [2023-11-21 22:18:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-21 22:18:16,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7929292929292929 [2023-11-21 22:18:16,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-21 22:18:16,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-21 22:18:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:16,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-21 22:18:16,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:16,951 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) [2023-11-21 22:18:16,951 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) [2023-11-21 22:18:16,952 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 157 transitions. [2023-11-21 22:18:16,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 262 flow [2023-11-21 22:18:16,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:16,956 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 120 flow [2023-11-21 22:18:16,956 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=120, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-21 22:18:16,957 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-21 22:18:16,957 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 120 flow [2023-11-21 22:18:16,957 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) [2023-11-21 22:18:16,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:16,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:18:16,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:18:16,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:16,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash 419892174, now seen corresponding path program 1 times [2023-11-21 22:18:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412192554] [2023-11-21 22:18:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:17,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412192554] [2023-11-21 22:18:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412192554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:17,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473751670] [2023-11-21 22:18:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:17,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-21 22:18:17,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 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) [2023-11-21 22:18:17,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:17,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-21 22:18:17,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:17,874 INFO L124 PetriNetUnfolderBase]: 2903/5168 cut-off events. [2023-11-21 22:18:17,874 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-11-21 22:18:17,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 5168 events. 2903/5168 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37781 event pairs, 1880 based on Foata normal form. 4/4924 useless extension candidates. Maximal degree in co-relation 9561. Up to 3459 conditions per place. [2023-11-21 22:18:17,921 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-21 22:18:17,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 208 flow [2023-11-21 22:18:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-21 22:18:17,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-21 22:18:17,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-21 22:18:17,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-21 22:18:17,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:17,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-21 22:18:17,925 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) [2023-11-21 22:18:17,926 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) [2023-11-21 22:18:17,927 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) [2023-11-21 22:18:17,927 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 143 transitions. [2023-11-21 22:18:17,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 208 flow [2023-11-21 22:18:17,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:17,929 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-21 22:18:17,930 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} [2023-11-21 22:18:17,931 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-21 22:18:17,931 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-21 22:18:17,931 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) [2023-11-21 22:18:17,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:17,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:18:17,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:17,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2063390867, now seen corresponding path program 1 times [2023-11-21 22:18:17,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:17,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354699249] [2023-11-21 22:18:17,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354699249] [2023-11-21 22:18:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354699249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070460432] [2023-11-21 22:18:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:18,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-21 22:18:18,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 38.0) 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) [2023-11-21 22:18:18,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:18,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-21 22:18:18,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:19,029 INFO L124 PetriNetUnfolderBase]: 2903/5096 cut-off events. [2023-11-21 22:18:19,030 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-21 22:18:19,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9369 conditions, 5096 events. 2903/5096 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 36844 event pairs, 1884 based on Foata normal form. 12/4885 useless extension candidates. Maximal degree in co-relation 9359. Up to 3431 conditions per place. [2023-11-21 22:18:19,087 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-21 22:18:19,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2023-11-21 22:18:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-21 22:18:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-21 22:18:19,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-21 22:18:19,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-21 22:18:19,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:19,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-21 22:18:19,091 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) [2023-11-21 22:18:19,092 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) [2023-11-21 22:18:19,092 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) [2023-11-21 22:18:19,092 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 143 transitions. [2023-11-21 22:18:19,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2023-11-21 22:18:19,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:19,097 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-21 22:18:19,097 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=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-21 22:18:19,098 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-21 22:18:19,099 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-21 22:18:19,099 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) [2023-11-21 22:18:19,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:19,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:19,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:18:19,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:19,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2063390866, now seen corresponding path program 1 times [2023-11-21 22:18:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:19,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523068223] [2023-11-21 22:18:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:19,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523068223] [2023-11-21 22:18:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523068223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844250391] [2023-11-21 22:18:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:19,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:19,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:18:19,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 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) [2023-11-21 22:18:19,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:19,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:18:19,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:20,062 INFO L124 PetriNetUnfolderBase]: 2920/5117 cut-off events. [2023-11-21 22:18:20,063 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-21 22:18:20,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9427 conditions, 5117 events. 2920/5117 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 36928 event pairs, 1892 based on Foata normal form. 0/4886 useless extension candidates. Maximal degree in co-relation 9417. Up to 3460 conditions per place. [2023-11-21 22:18:20,104 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-21 22:18:20,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 204 flow [2023-11-21 22:18:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-21 22:18:20,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-21 22:18:20,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:20,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:20,109 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) [2023-11-21 22:18:20,110 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) [2023-11-21 22:18:20,110 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 141 transitions. [2023-11-21 22:18:20,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 204 flow [2023-11-21 22:18:20,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:20,115 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-21 22:18:20,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-21 22:18:20,118 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-21 22:18:20,118 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-21 22:18:20,119 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) [2023-11-21 22:18:20,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:20,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:18:20,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:20,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash 905785381, now seen corresponding path program 1 times [2023-11-21 22:18:20,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:20,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17610760] [2023-11-21 22:18:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17610760] [2023-11-21 22:18:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17610760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478529921] [2023-11-21 22:18:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:20,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-21 22:18:20,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 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) [2023-11-21 22:18:20,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:20,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-21 22:18:20,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:20,921 INFO L124 PetriNetUnfolderBase]: 2978/5123 cut-off events. [2023-11-21 22:18:20,921 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-21 22:18:20,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 5123 events. 2978/5123 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36389 event pairs, 1424 based on Foata normal form. 0/4964 useless extension candidates. Maximal degree in co-relation 9505. Up to 3426 conditions per place. [2023-11-21 22:18:20,970 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-21 22:18:20,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 202 flow [2023-11-21 22:18:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-21 22:18:20,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-21 22:18:20,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:20,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-21 22:18:20,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:20,974 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) [2023-11-21 22:18:20,974 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) [2023-11-21 22:18:20,975 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 141 transitions. [2023-11-21 22:18:20,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 202 flow [2023-11-21 22:18:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:20,977 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-21 22:18:20,978 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} [2023-11-21 22:18:20,978 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-21 22:18:20,978 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-21 22:18:20,979 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) [2023-11-21 22:18:20,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:20,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:20,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:18:20,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash 905785382, now seen corresponding path program 1 times [2023-11-21 22:18:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306376365] [2023-11-21 22:18:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:21,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:21,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306376365] [2023-11-21 22:18:21,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306376365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:21,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:21,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104355923] [2023-11-21 22:18:21,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:21,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:21,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:21,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:21,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-21 22:18:21,085 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) [2023-11-21 22:18:21,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:21,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-21 22:18:21,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:21,762 INFO L124 PetriNetUnfolderBase]: 2903/5072 cut-off events. [2023-11-21 22:18:21,763 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-21 22:18:21,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 5072 events. 2903/5072 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 36315 event pairs, 920 based on Foata normal form. 36/4989 useless extension candidates. Maximal degree in co-relation 9367. Up to 3315 conditions per place. [2023-11-21 22:18:21,800 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-21 22:18:21,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 198 flow [2023-11-21 22:18:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:18:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-21 22:18:21,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-21 22:18:21,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-21 22:18:21,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-21 22:18:21,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:21,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-21 22:18:21,802 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) [2023-11-21 22:18:21,803 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) [2023-11-21 22:18:21,803 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) [2023-11-21 22:18:21,804 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 143 transitions. [2023-11-21 22:18:21,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 198 flow [2023-11-21 22:18:21,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:21,806 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 110 flow [2023-11-21 22:18:21,807 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} [2023-11-21 22:18:21,807 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-11-21 22:18:21,807 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 110 flow [2023-11-21 22:18:21,808 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) [2023-11-21 22:18:21,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:21,808 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] [2023-11-21 22:18:21,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:18:21,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:21,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1674524455, now seen corresponding path program 1 times [2023-11-21 22:18:21,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:21,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499402317] [2023-11-21 22:18:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:21,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499402317] [2023-11-21 22:18:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499402317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:18:22,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759663666] [2023-11-21 22:18:22,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:22,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:18:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:18:22,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:18:23,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-21 22:18:23,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 8 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:23,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:23,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-21 22:18:23,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:23,901 INFO L124 PetriNetUnfolderBase]: 2920/4937 cut-off events. [2023-11-21 22:18:23,901 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-21 22:18:23,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 4937 events. 2920/4937 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 34128 event pairs, 1148 based on Foata normal form. 144/4953 useless extension candidates. Maximal degree in co-relation 9261. Up to 3315 conditions per place. [2023-11-21 22:18:23,933 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 35 selfloop transitions, 4 changer transitions 11/73 dead transitions. [2023-11-21 22:18:23,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 258 flow [2023-11-21 22:18:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 275 transitions. [2023-11-21 22:18:23,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-11-21 22:18:23,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 275 transitions. [2023-11-21 22:18:23,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 275 transitions. [2023-11-21 22:18:23,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:23,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 275 transitions. [2023-11-21 22:18:23,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:23,939 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) [2023-11-21 22:18:23,939 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) [2023-11-21 22:18:23,939 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 7 states and 275 transitions. [2023-11-21 22:18:23,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 258 flow [2023-11-21 22:18:23,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:18:23,942 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 110 flow [2023-11-21 22:18:23,943 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=110, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-11-21 22:18:23,943 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-21 22:18:23,944 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 110 flow [2023-11-21 22:18:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:23,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:23,944 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] [2023-11-21 22:18:23,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:18:23,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:23,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:23,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1674522956, now seen corresponding path program 1 times [2023-11-21 22:18:23,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:23,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063548208] [2023-11-21 22:18:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:23,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:24,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:24,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063548208] [2023-11-21 22:18:24,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063548208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:24,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972168976] [2023-11-21 22:18:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:24,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:24,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 66 [2023-11-21 22:18:24,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:24,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:24,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 66 [2023-11-21 22:18:24,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:30,900 INFO L124 PetriNetUnfolderBase]: 46586/66121 cut-off events. [2023-11-21 22:18:30,901 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-21 22:18:31,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128793 conditions, 66121 events. 46586/66121 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 2666. Compared 474166 event pairs, 11312 based on Foata normal form. 0/64492 useless extension candidates. Maximal degree in co-relation 128782. Up to 20650 conditions per place. [2023-11-21 22:18:31,392 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 48 selfloop transitions, 9 changer transitions 109/181 dead transitions. [2023-11-21 22:18:31,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 181 transitions, 718 flow [2023-11-21 22:18:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:18:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:18:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 420 transitions. [2023-11-21 22:18:31,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2023-11-21 22:18:31,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 420 transitions. [2023-11-21 22:18:31,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 420 transitions. [2023-11-21 22:18:31,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:31,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 420 transitions. [2023-11-21 22:18:31,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 46.666666666666664) internal successors, (420), 9 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:31,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:31,414 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:31,414 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 110 flow. Second operand 9 states and 420 transitions. [2023-11-21 22:18:31,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 181 transitions, 718 flow [2023-11-21 22:18:31,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 181 transitions, 708 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:18:31,432 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 227 flow [2023-11-21 22:18:31,432 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=227, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2023-11-21 22:18:31,433 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-11-21 22:18:31,433 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 227 flow [2023-11-21 22:18:31,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:31,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:31,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:31,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:18:31,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:31,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 636088595, now seen corresponding path program 1 times [2023-11-21 22:18:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:31,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748169342] [2023-11-21 22:18:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748169342] [2023-11-21 22:18:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748169342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:31,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026872326] [2023-11-21 22:18:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:31,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-21 22:18:31,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:31,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:31,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-21 22:18:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:36,112 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([461] L822-->L838: Formula: (let ((.cse9 (= (mod v_~a$r_buff1_thd4~0_58 256) 0)) (.cse2 (= (mod v_~a$r_buff0_thd4~0_68 256) 0))) (let ((.cse6 (not .cse2)) (.cse12 (= (mod v_~a$w_buff0_used~0_140 256) 0)) (.cse11 (and (= (mod v_~a$w_buff1_used~0_129 256) 0) .cse2)) (.cse5 (and .cse2 .cse9))) (let ((.cse7 (or .cse12 .cse11 .cse5)) (.cse8 (and .cse6 (not .cse12)))) (let ((.cse1 (ite .cse7 v_~a~0_70 (ite .cse8 v_~a$w_buff0~0_55 v_~a$w_buff1~0_48))) (.cse3 (= (mod v_~a$w_buff1_used~0_128 256) 0)) (.cse0 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse4 (= (mod v_~a$w_buff0_used~0_139 256) 0))) (and (= v_~a~0_68 (ite .cse0 v_~a$mem_tmp~0_16 .cse1)) (= v_~a$w_buff0~0_54 v_~a$w_buff0~0_55) (= v_~a$r_buff0_thd4~0_67 (ite .cse0 v_~a$r_buff0_thd4~0_68 (ite (or (and .cse2 .cse3) .cse4 .cse5) v_~a$r_buff0_thd4~0_68 (ite (and .cse6 (not .cse4)) 0 v_~a$r_buff0_thd4~0_68)))) (= v_~a$w_buff0_used~0_139 (ite .cse0 v_~a$w_buff0_used~0_140 (ite .cse7 v_~a$w_buff0_used~0_140 (ite .cse8 0 v_~a$w_buff0_used~0_140)))) (= v_~a$w_buff1~0_48 v_~a$w_buff1~0_47) (= v_~a$flush_delayed~0_19 0) (= .cse1 v_~__unbuffered_p3_EBX~0_8) (= v_~a$r_buff1_thd4~0_57 (ite .cse0 v_~a$r_buff1_thd4~0_58 (ite (let ((.cse10 (= (mod v_~a$r_buff0_thd4~0_67 256) 0))) (or (and .cse9 .cse10) (and .cse3 .cse10) .cse4)) v_~a$r_buff1_thd4~0_58 0))) (= (ite .cse0 v_~a$w_buff1_used~0_129 (ite (or .cse11 .cse4 .cse5) v_~a$w_buff1_used~0_129 0)) v_~a$w_buff1_used~0_128) (= v_~a~0_70 v_~a$mem_tmp~0_16)))))) InVars {~a~0=v_~a~0_70, ~a$w_buff1~0=v_~a$w_buff1~0_48, ~a$w_buff0~0=v_~a$w_buff0~0_55, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_58, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_140, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_129, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_68} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_57, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_139, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_8, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_67, ~a~0=v_~a~0_68, ~a$mem_tmp~0=v_~a$mem_tmp~0_16, ~weak$$choice0~0=v_~weak$$choice0~0_13, ~a$w_buff1~0=v_~a$w_buff1~0_47, ~a$flush_delayed~0=v_~a$flush_delayed~0_19, ~a$w_buff0~0=v_~a$w_buff0~0_54, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_128, ~weak$$choice2~0=v_~weak$$choice2~0_30, P3Thread1of1ForFork1_#t~nondet3=|v_P3Thread1of1ForFork1_#t~nondet3_1|, P3Thread1of1ForFork1_#t~nondet4=|v_P3Thread1of1ForFork1_#t~nondet4_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork1_#t~nondet3, P3Thread1of1ForFork1_#t~nondet4][105], [9#L762true, 122#(and (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (not (= |ULTIMATE.start_main_~#t802~0#1.base| |ULTIMATE.start_main_~#t801~0#1.base|)) (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t801~0#1.base|)) (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t802~0#1.base|)) (not (= |ULTIMATE.start_main_~#t801~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (not (= |ULTIMATE.start_main_~#t802~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store (store (store |#valid| |ULTIMATE.start_main_~#t801~0#1.base| 0) |ULTIMATE.start_main_~#t802~0#1.base| 0) |ULTIMATE.start_main_~#t803~0#1.base| 0) |ULTIMATE.start_main_~#t804~0#1.base| 0))), P0Thread1of1ForFork2InUse, 157#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 56#L18-1true, P1Thread1of1ForFork0InUse, Black: 137#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), 36#L838true, Black: 128#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), P2Thread1of1ForFork3InUse, 54#L779true, Black: 135#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), P3Thread1of1ForFork1InUse, 125#true, Black: 131#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 133#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), Black: 129#(not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)), Black: 127#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 64#P2EXITtrue]) [2023-11-21 22:18:36,112 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-11-21 22:18:36,112 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-21 22:18:36,112 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-21 22:18:36,112 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-11-21 22:18:36,581 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([461] L822-->L838: Formula: (let ((.cse9 (= (mod v_~a$r_buff1_thd4~0_58 256) 0)) (.cse2 (= (mod v_~a$r_buff0_thd4~0_68 256) 0))) (let ((.cse6 (not .cse2)) (.cse12 (= (mod v_~a$w_buff0_used~0_140 256) 0)) (.cse11 (and (= (mod v_~a$w_buff1_used~0_129 256) 0) .cse2)) (.cse5 (and .cse2 .cse9))) (let ((.cse7 (or .cse12 .cse11 .cse5)) (.cse8 (and .cse6 (not .cse12)))) (let ((.cse1 (ite .cse7 v_~a~0_70 (ite .cse8 v_~a$w_buff0~0_55 v_~a$w_buff1~0_48))) (.cse3 (= (mod v_~a$w_buff1_used~0_128 256) 0)) (.cse0 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse4 (= (mod v_~a$w_buff0_used~0_139 256) 0))) (and (= v_~a~0_68 (ite .cse0 v_~a$mem_tmp~0_16 .cse1)) (= v_~a$w_buff0~0_54 v_~a$w_buff0~0_55) (= v_~a$r_buff0_thd4~0_67 (ite .cse0 v_~a$r_buff0_thd4~0_68 (ite (or (and .cse2 .cse3) .cse4 .cse5) v_~a$r_buff0_thd4~0_68 (ite (and .cse6 (not .cse4)) 0 v_~a$r_buff0_thd4~0_68)))) (= v_~a$w_buff0_used~0_139 (ite .cse0 v_~a$w_buff0_used~0_140 (ite .cse7 v_~a$w_buff0_used~0_140 (ite .cse8 0 v_~a$w_buff0_used~0_140)))) (= v_~a$w_buff1~0_48 v_~a$w_buff1~0_47) (= v_~a$flush_delayed~0_19 0) (= .cse1 v_~__unbuffered_p3_EBX~0_8) (= v_~a$r_buff1_thd4~0_57 (ite .cse0 v_~a$r_buff1_thd4~0_58 (ite (let ((.cse10 (= (mod v_~a$r_buff0_thd4~0_67 256) 0))) (or (and .cse9 .cse10) (and .cse3 .cse10) .cse4)) v_~a$r_buff1_thd4~0_58 0))) (= (ite .cse0 v_~a$w_buff1_used~0_129 (ite (or .cse11 .cse4 .cse5) v_~a$w_buff1_used~0_129 0)) v_~a$w_buff1_used~0_128) (= v_~a~0_70 v_~a$mem_tmp~0_16)))))) InVars {~a~0=v_~a~0_70, ~a$w_buff1~0=v_~a$w_buff1~0_48, ~a$w_buff0~0=v_~a$w_buff0~0_55, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_58, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_140, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_129, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_68} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_57, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_139, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_8, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_67, ~a~0=v_~a~0_68, ~a$mem_tmp~0=v_~a$mem_tmp~0_16, ~weak$$choice0~0=v_~weak$$choice0~0_13, ~a$w_buff1~0=v_~a$w_buff1~0_47, ~a$flush_delayed~0=v_~a$flush_delayed~0_19, ~a$w_buff0~0=v_~a$w_buff0~0_54, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_128, ~weak$$choice2~0=v_~weak$$choice2~0_30, P3Thread1of1ForFork1_#t~nondet3=|v_P3Thread1of1ForFork1_#t~nondet3_1|, P3Thread1of1ForFork1_#t~nondet4=|v_P3Thread1of1ForFork1_#t~nondet4_1|} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork1_#t~nondet3, P3Thread1of1ForFork1_#t~nondet4][112], [9#L762true, 122#(and (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (not (= |ULTIMATE.start_main_~#t802~0#1.base| |ULTIMATE.start_main_~#t801~0#1.base|)) (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t801~0#1.base|)) (not (= |ULTIMATE.start_main_~#t803~0#1.base| |ULTIMATE.start_main_~#t802~0#1.base|)) (not (= |ULTIMATE.start_main_~#t801~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (not (= |ULTIMATE.start_main_~#t802~0#1.base| |ULTIMATE.start_main_~#t804~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store (store (store |#valid| |ULTIMATE.start_main_~#t801~0#1.base| 0) |ULTIMATE.start_main_~#t802~0#1.base| 0) |ULTIMATE.start_main_~#t803~0#1.base| 0) |ULTIMATE.start_main_~#t804~0#1.base| 0))), 157#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), P0Thread1of1ForFork2InUse, 56#L18-1true, P1Thread1of1ForFork0InUse, 36#L838true, Black: 137#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), P2Thread1of1ForFork3InUse, Black: 128#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 135#(and (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), P3Thread1of1ForFork1InUse, 125#true, Black: 131#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0)), Black: 133#(and (or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))) (not (= (* 256 (div ~main$tmp_guard1~0 256)) ~main$tmp_guard1~0)) (<= (div ~main$tmp_guard1~0 256) 0) (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0))), Black: 129#(not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)), 38#L782true, Black: 127#(or (not (= 2 ~__unbuffered_p3_EAX~0)) (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= 2 ~z~0))), 64#P2EXITtrue]) [2023-11-21 22:18:36,581 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is cut-off event [2023-11-21 22:18:36,581 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-21 22:18:36,581 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-21 22:18:36,582 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-11-21 22:18:37,683 INFO L124 PetriNetUnfolderBase]: 28021/44522 cut-off events. [2023-11-21 22:18:37,684 INFO L125 PetriNetUnfolderBase]: For 55652/58734 co-relation queries the response was YES. [2023-11-21 22:18:37,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123175 conditions, 44522 events. 28021/44522 cut-off events. For 55652/58734 co-relation queries the response was YES. Maximal size of possible extension queue 2200. Compared 376332 event pairs, 7510 based on Foata normal form. 1611/44906 useless extension candidates. Maximal degree in co-relation 123156. Up to 26488 conditions per place. [2023-11-21 22:18:38,188 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 38 selfloop transitions, 5 changer transitions 51/119 dead transitions. [2023-11-21 22:18:38,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 119 transitions, 702 flow [2023-11-21 22:18:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2023-11-21 22:18:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2023-11-21 22:18:38,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 312 transitions. [2023-11-21 22:18:38,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 312 transitions. [2023-11-21 22:18:38,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:38,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 312 transitions. [2023-11-21 22:18:38,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.57142857142857) internal successors, (312), 7 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:38,208 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) [2023-11-21 22:18:38,209 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) [2023-11-21 22:18:38,209 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 227 flow. Second operand 7 states and 312 transitions. [2023-11-21 22:18:38,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 119 transitions, 702 flow [2023-11-21 22:18:39,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 620 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-11-21 22:18:39,145 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 266 flow [2023-11-21 22:18:39,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-11-21 22:18:39,148 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2023-11-21 22:18:39,148 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 266 flow [2023-11-21 22:18:39,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:39,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:39,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:39,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:18:39,149 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:39,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1255219309, now seen corresponding path program 1 times [2023-11-21 22:18:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:39,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060535104] [2023-11-21 22:18:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:39,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:39,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060535104] [2023-11-21 22:18:39,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060535104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:39,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:39,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803663863] [2023-11-21 22:18:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:39,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:39,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-21 22:18:39,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:39,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:39,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-21 22:18:39,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:44,655 INFO L124 PetriNetUnfolderBase]: 23767/37490 cut-off events. [2023-11-21 22:18:44,655 INFO L125 PetriNetUnfolderBase]: For 56857/58612 co-relation queries the response was YES. [2023-11-21 22:18:44,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102453 conditions, 37490 events. 23767/37490 cut-off events. For 56857/58612 co-relation queries the response was YES. Maximal size of possible extension queue 1818. Compared 308820 event pairs, 5802 based on Foata normal form. 1722/38079 useless extension candidates. Maximal degree in co-relation 102431. Up to 19587 conditions per place. [2023-11-21 22:18:44,971 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 34 selfloop transitions, 3 changer transitions 43/111 dead transitions. [2023-11-21 22:18:44,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 584 flow [2023-11-21 22:18:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2023-11-21 22:18:44,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6796536796536796 [2023-11-21 22:18:44,973 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 314 transitions. [2023-11-21 22:18:44,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 314 transitions. [2023-11-21 22:18:44,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:44,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 314 transitions. [2023-11-21 22:18:44,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.857142857142854) internal successors, (314), 7 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:44,977 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) [2023-11-21 22:18:44,977 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) [2023-11-21 22:18:44,977 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 266 flow. Second operand 7 states and 314 transitions. [2023-11-21 22:18:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 584 flow [2023-11-21 22:18:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 567 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-21 22:18:45,360 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 272 flow [2023-11-21 22:18:45,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2023-11-21 22:18:45,361 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2023-11-21 22:18:45,361 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 272 flow [2023-11-21 22:18:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:45,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:45,362 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] [2023-11-21 22:18:45,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:18:45,362 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:45,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash -807052875, now seen corresponding path program 1 times [2023-11-21 22:18:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:45,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742108047] [2023-11-21 22:18:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742108047] [2023-11-21 22:18:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742108047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:45,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214811944] [2023-11-21 22:18:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:45,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-21 22:18:45,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:45,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:45,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-21 22:18:45,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:50,510 INFO L124 PetriNetUnfolderBase]: 22810/36248 cut-off events. [2023-11-21 22:18:50,510 INFO L125 PetriNetUnfolderBase]: For 68984/69598 co-relation queries the response was YES. [2023-11-21 22:18:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102320 conditions, 36248 events. 22810/36248 cut-off events. For 68984/69598 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 300046 event pairs, 7588 based on Foata normal form. 1174/36499 useless extension candidates. Maximal degree in co-relation 102294. Up to 22723 conditions per place. [2023-11-21 22:18:50,847 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 44 selfloop transitions, 5 changer transitions 55/133 dead transitions. [2023-11-21 22:18:50,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 783 flow [2023-11-21 22:18:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2023-11-21 22:18:50,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2023-11-21 22:18:50,851 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 319 transitions. [2023-11-21 22:18:50,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 319 transitions. [2023-11-21 22:18:50,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:50,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 319 transitions. [2023-11-21 22:18:50,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.57142857142857) internal successors, (319), 7 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:50,854 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) [2023-11-21 22:18:50,855 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) [2023-11-21 22:18:50,855 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 272 flow. Second operand 7 states and 319 transitions. [2023-11-21 22:18:50,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 783 flow [2023-11-21 22:18:51,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 133 transitions, 757 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-21 22:18:51,301 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 327 flow [2023-11-21 22:18:51,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2023-11-21 22:18:51,303 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2023-11-21 22:18:51,303 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 327 flow [2023-11-21 22:18:51,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:51,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:51,303 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] [2023-11-21 22:18:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:18:51,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:51,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1586420140, now seen corresponding path program 1 times [2023-11-21 22:18:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:51,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129684571] [2023-11-21 22:18:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:51,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129684571] [2023-11-21 22:18:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129684571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:18:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045425180] [2023-11-21 22:18:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:18:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:18:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:18:51,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-21 22:18:51,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:51,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:51,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-21 22:18:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:18:56,546 INFO L124 PetriNetUnfolderBase]: 22057/34822 cut-off events. [2023-11-21 22:18:56,546 INFO L125 PetriNetUnfolderBase]: For 78985/79904 co-relation queries the response was YES. [2023-11-21 22:18:56,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104626 conditions, 34822 events. 22057/34822 cut-off events. For 78985/79904 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 279601 event pairs, 5820 based on Foata normal form. 978/35279 useless extension candidates. Maximal degree in co-relation 104599. Up to 21794 conditions per place. [2023-11-21 22:18:56,892 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 42 selfloop transitions, 5 changer transitions 55/135 dead transitions. [2023-11-21 22:18:56,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 830 flow [2023-11-21 22:18:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:18:56,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:18:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2023-11-21 22:18:56,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6861471861471862 [2023-11-21 22:18:56,895 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2023-11-21 22:18:56,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2023-11-21 22:18:56,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:18:56,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2023-11-21 22:18:56,897 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) [2023-11-21 22:18:56,899 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) [2023-11-21 22:18:56,899 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) [2023-11-21 22:18:56,900 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 327 flow. Second operand 7 states and 317 transitions. [2023-11-21 22:18:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 830 flow [2023-11-21 22:18:57,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 135 transitions, 813 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-21 22:18:57,395 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 387 flow [2023-11-21 22:18:57,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-11-21 22:18:57,396 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-11-21 22:18:57,396 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 387 flow [2023-11-21 22:18:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:57,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:18:57,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:57,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:18:57,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 22:18:57,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 141047688, now seen corresponding path program 1 times [2023-11-21 22:18:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112847658] [2023-11-21 22:18:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:57,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:57,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112847658] [2023-11-21 22:18:57,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112847658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:57,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:57,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:18:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942716707] [2023-11-21 22:18:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:57,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:18:57,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:18:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:18:57,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 66 [2023-11-21 22:18:57,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:18:57,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:18:57,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 66 [2023-11-21 22:18:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand