./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl --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 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:57,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:57,267 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:08:57,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:57,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:57,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:57,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:57,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:57,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:57,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:57,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:57,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:57,311 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:57,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:57,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:08:57,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:57,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:08:57,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:57,319 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:08:57,319 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:08:57,320 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:08:57,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:57,321 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:08:57,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:08:57,322 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:08:57,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:57,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:57,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:57,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:57,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:57,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:57,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:57,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:57,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:57,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:57,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:57,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:57,329 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:57,329 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_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 [2023-11-12 02:08:57,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:57,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:57,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:57,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:57,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:57,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:09:01,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:09:01,432 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:09:01,432 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:09:01,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/data/a005c7451/20bd3758fcd54f7bb093ee8981804ef3/FLAGc6a5ce284 [2023-11-12 02:09:01,476 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/data/a005c7451/20bd3758fcd54f7bb093ee8981804ef3 [2023-11-12 02:09:01,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:09:01,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:09:01,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:01,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:09:01,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:09:01,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:01" (1/1) ... [2023-11-12 02:09:01,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcf30b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:01, skipping insertion in model container [2023-11-12 02:09:01,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:09:01" (1/1) ... [2023-11-12 02:09:01,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:09:02,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:02,109 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:09:02,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:09:02,264 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:02,265 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:09:02,273 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:09:02,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02 WrapperNode [2023-11-12 02:09:02,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:09:02,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:02,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:09:02,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:09:02,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,366 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2023-11-12 02:09:02,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:09:02,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:09:02,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:09:02,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:09:02,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:09:02,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:09:02,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:09:02,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:09:02,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (1/1) ... [2023-11-12 02:09:02,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:09:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:02,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:09:02,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9dc8db-43eb-41ef-8423-4605d5843ffc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:09:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:09:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:09:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:09:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:09:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:09:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:09:02,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:09:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:09:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:09:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:09:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:09:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:09:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:09:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:09:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:09:02,540 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:09:02,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:09:02,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:03,307 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:03,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:03,595 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:09:03,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:03 BoogieIcfgContainer [2023-11-12 02:09:03,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:03,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:03,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:03,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:03,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:09:01" (1/3) ... [2023-11-12 02:09:03,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0e0cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:03, skipping insertion in model container [2023-11-12 02:09:03,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:09:02" (2/3) ... [2023-11-12 02:09:03,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0e0cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:03, skipping insertion in model container [2023-11-12 02:09:03,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:03" (3/3) ... [2023-11-12 02:09:03,614 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-12 02:09:03,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:03,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-12 02:09:03,640 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:09:03,725 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:09:03,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 125 transitions, 262 flow [2023-11-12 02:09:03,853 INFO L124 PetriNetUnfolderBase]: 3/122 cut-off events. [2023-11-12 02:09:03,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 3/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-12 02:09:03,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 125 transitions, 262 flow [2023-11-12 02:09:03,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 122 transitions, 253 flow [2023-11-12 02:09:03,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:09:03,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 122 transitions, 253 flow [2023-11-12 02:09:03,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 122 transitions, 253 flow [2023-11-12 02:09:03,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 253 flow [2023-11-12 02:09:03,946 INFO L124 PetriNetUnfolderBase]: 3/122 cut-off events. [2023-11-12 02:09:03,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 3/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-12 02:09:03,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 2484 [2023-11-12 02:09:09,614 INFO L134 LiptonReduction]: Checked pairs total: 6756 [2023-11-12 02:09:09,615 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-12 02:09:09,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:09,651 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;@6248f972, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:09,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:09:09,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:09:09,653 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:09:09,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:09,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:09:09,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:09,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 634, now seen corresponding path program 1 times [2023-11-12 02:09:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:09,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542629620] [2023-11-12 02:09:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:09,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:09,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542629620] [2023-11-12 02:09:09,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542629620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:09,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:09,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:09:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473936823] [2023-11-12 02:09:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:09,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:09,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:09,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 254 [2023-11-12 02:09:09,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:09,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:09,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 254 [2023-11-12 02:09:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:10,771 INFO L124 PetriNetUnfolderBase]: 2251/3280 cut-off events. [2023-11-12 02:09:10,772 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-12 02:09:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6611 conditions, 3280 events. 2251/3280 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15177 event pairs, 2251 based on Foata normal form. 120/2820 useless extension candidates. Maximal degree in co-relation 6600. Up to 3269 conditions per place. [2023-11-12 02:09:10,807 INFO L140 encePairwiseOnDemand]: 247/254 looper letters, 25 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-11-12 02:09:10,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 111 flow [2023-11-12 02:09:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:09:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2023-11-12 02:09:10,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921259842519685 [2023-11-12 02:09:10,828 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2023-11-12 02:09:10,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2023-11-12 02:09:10,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:10,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2023-11-12 02:09:10,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:10,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:10,843 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:10,845 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 75 flow. Second operand 2 states and 250 transitions. [2023-11-12 02:09:10,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 111 flow [2023-11-12 02:09:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:09:10,851 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 58 flow [2023-11-12 02:09:10,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-11-12 02:09:10,857 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-11-12 02:09:10,858 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 58 flow [2023-11-12 02:09:10,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:10,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:10,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:09:10,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:10,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 433719164, now seen corresponding path program 1 times [2023-11-12 02:09:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599466339] [2023-11-12 02:09:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:11,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:11,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599466339] [2023-11-12 02:09:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599466339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:09:11,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201249173] [2023-11-12 02:09:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:11,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:11,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-11-12 02:09:11,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:11,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:11,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-11-12 02:09:11,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:11,972 INFO L124 PetriNetUnfolderBase]: 1779/2796 cut-off events. [2023-11-12 02:09:11,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:09:11,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5461 conditions, 2796 events. 1779/2796 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14364 event pairs, 363 based on Foata normal form. 0/2508 useless extension candidates. Maximal degree in co-relation 5458. Up to 1993 conditions per place. [2023-11-12 02:09:12,009 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 33 selfloop transitions, 2 changer transitions 4/40 dead transitions. [2023-11-12 02:09:12,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 164 flow [2023-11-12 02:09:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:09:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-11-12 02:09:12,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776902887139108 [2023-11-12 02:09:12,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-11-12 02:09:12,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-11-12 02:09:12,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:12,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-11-12 02:09:12,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:12,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:12,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:12,025 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 58 flow. Second operand 3 states and 364 transitions. [2023-11-12 02:09:12,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 164 flow [2023-11-12 02:09:12,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:12,027 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 56 flow [2023-11-12 02:09:12,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-11-12 02:09:12,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-11-12 02:09:12,029 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 56 flow [2023-11-12 02:09:12,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:12,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:12,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:09:12,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:12,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1668007906, now seen corresponding path program 1 times [2023-11-12 02:09:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486390015] [2023-11-12 02:09:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:12,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:12,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486390015] [2023-11-12 02:09:12,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486390015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:12,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:12,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179679992] [2023-11-12 02:09:12,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:12,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:09:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:09:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:09:12,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 254 [2023-11-12 02:09:12,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:12,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:12,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 254 [2023-11-12 02:09:12,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:13,130 INFO L124 PetriNetUnfolderBase]: 1897/2770 cut-off events. [2023-11-12 02:09:13,131 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2023-11-12 02:09:13,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2770 events. 1897/2770 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12293 event pairs, 495 based on Foata normal form. 0/2662 useless extension candidates. Maximal degree in co-relation 5755. Up to 2347 conditions per place. [2023-11-12 02:09:13,157 INFO L140 encePairwiseOnDemand]: 248/254 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-11-12 02:09:13,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 60 transitions, 260 flow [2023-11-12 02:09:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:09:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-11-12 02:09:13,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582677165354331 [2023-11-12 02:09:13,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-11-12 02:09:13,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-11-12 02:09:13,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:13,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-11-12 02:09:13,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:13,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:13,172 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:13,172 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 56 flow. Second operand 5 states and 582 transitions. [2023-11-12 02:09:13,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 60 transitions, 260 flow [2023-11-12 02:09:13,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:13,178 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 110 flow [2023-11-12 02:09:13,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-12 02:09:13,180 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-11-12 02:09:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 110 flow [2023-11-12 02:09:13,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:13,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:13,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:09:13,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:13,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash 168636032, now seen corresponding path program 1 times [2023-11-12 02:09:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053956657] [2023-11-12 02:09:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053956657] [2023-11-12 02:09:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053956657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:09:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124136860] [2023-11-12 02:09:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:14,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 254 [2023-11-12 02:09:14,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:14,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:14,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 254 [2023-11-12 02:09:14,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:15,028 INFO L124 PetriNetUnfolderBase]: 2221/3358 cut-off events. [2023-11-12 02:09:15,028 INFO L125 PetriNetUnfolderBase]: For 1357/1359 co-relation queries the response was YES. [2023-11-12 02:09:15,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8127 conditions, 3358 events. 2221/3358 cut-off events. For 1357/1359 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17151 event pairs, 678 based on Foata normal form. 212/3519 useless extension candidates. Maximal degree in co-relation 8120. Up to 1189 conditions per place. [2023-11-12 02:09:15,058 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 58 selfloop transitions, 5 changer transitions 4/70 dead transitions. [2023-11-12 02:09:15,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 376 flow [2023-11-12 02:09:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 622 transitions. [2023-11-12 02:09:15,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40813648293963256 [2023-11-12 02:09:15,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 622 transitions. [2023-11-12 02:09:15,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 622 transitions. [2023-11-12 02:09:15,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:15,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 622 transitions. [2023-11-12 02:09:15,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.66666666666667) internal successors, (622), 6 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,071 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 110 flow. Second operand 6 states and 622 transitions. [2023-11-12 02:09:15,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 376 flow [2023-11-12 02:09:15,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:09:15,080 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 144 flow [2023-11-12 02:09:15,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-11-12 02:09:15,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-12 02:09:15,082 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 144 flow [2023-11-12 02:09:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:15,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:15,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:09:15,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:15,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:15,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1106779842, now seen corresponding path program 1 times [2023-11-12 02:09:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:15,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811775774] [2023-11-12 02:09:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:15,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811775774] [2023-11-12 02:09:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811775774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:15,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509120432] [2023-11-12 02:09:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:09:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:09:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:09:15,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 254 [2023-11-12 02:09:15,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:15,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:15,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 254 [2023-11-12 02:09:15,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:16,151 INFO L124 PetriNetUnfolderBase]: 2196/3387 cut-off events. [2023-11-12 02:09:16,151 INFO L125 PetriNetUnfolderBase]: For 1921/1924 co-relation queries the response was YES. [2023-11-12 02:09:16,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 3387 events. 2196/3387 cut-off events. For 1921/1924 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17671 event pairs, 946 based on Foata normal form. 111/3456 useless extension candidates. Maximal degree in co-relation 8516. Up to 2208 conditions per place. [2023-11-12 02:09:16,184 INFO L140 encePairwiseOnDemand]: 250/254 looper letters, 36 selfloop transitions, 3 changer transitions 21/63 dead transitions. [2023-11-12 02:09:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 361 flow [2023-11-12 02:09:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:09:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-11-12 02:09:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582677165354331 [2023-11-12 02:09:16,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-11-12 02:09:16,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-11-12 02:09:16,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:16,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-11-12 02:09:16,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:16,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:16,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:16,197 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 144 flow. Second operand 5 states and 582 transitions. [2023-11-12 02:09:16,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 361 flow [2023-11-12 02:09:16,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:16,210 INFO L231 Difference]: Finished difference. Result has 51 places, 32 transitions, 157 flow [2023-11-12 02:09:16,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=51, PETRI_TRANSITIONS=32} [2023-11-12 02:09:16,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-12 02:09:16,211 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 32 transitions, 157 flow [2023-11-12 02:09:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:16,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:16,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:09:16,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:16,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 974204925, now seen corresponding path program 1 times [2023-11-12 02:09:16,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:16,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369213308] [2023-11-12 02:09:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:16,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:16,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369213308] [2023-11-12 02:09:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369213308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:16,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:09:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316554493] [2023-11-12 02:09:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:16,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:16,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:17,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 254 [2023-11-12 02:09:17,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 32 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:17,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:17,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 254 [2023-11-12 02:09:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:17,782 INFO L124 PetriNetUnfolderBase]: 1685/2597 cut-off events. [2023-11-12 02:09:17,782 INFO L125 PetriNetUnfolderBase]: For 2469/2469 co-relation queries the response was YES. [2023-11-12 02:09:17,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6804 conditions, 2597 events. 1685/2597 cut-off events. For 2469/2469 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12905 event pairs, 734 based on Foata normal form. 96/2634 useless extension candidates. Maximal degree in co-relation 6790. Up to 2471 conditions per place. [2023-11-12 02:09:17,809 INFO L140 encePairwiseOnDemand]: 250/254 looper letters, 30 selfloop transitions, 4 changer transitions 3/39 dead transitions. [2023-11-12 02:09:17,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 228 flow [2023-11-12 02:09:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:09:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 498 transitions. [2023-11-12 02:09:17,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921259842519685 [2023-11-12 02:09:17,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 498 transitions. [2023-11-12 02:09:17,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 498 transitions. [2023-11-12 02:09:17,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:17,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 498 transitions. [2023-11-12 02:09:17,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:17,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:17,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:17,821 INFO L175 Difference]: Start difference. First operand has 51 places, 32 transitions, 157 flow. Second operand 5 states and 498 transitions. [2023-11-12 02:09:17,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 228 flow [2023-11-12 02:09:17,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 210 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-12 02:09:17,836 INFO L231 Difference]: Finished difference. Result has 45 places, 26 transitions, 102 flow [2023-11-12 02:09:17,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2023-11-12 02:09:17,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-12 02:09:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 102 flow [2023-11-12 02:09:17,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:17,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:17,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:09:17,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1254035441, now seen corresponding path program 1 times [2023-11-12 02:09:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262557494] [2023-11-12 02:09:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262557494] [2023-11-12 02:09:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262557494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:18,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:09:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983688698] [2023-11-12 02:09:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:18,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:18,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:18,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 254 [2023-11-12 02:09:18,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 105.33333333333333) internal successors, (632), 6 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:18,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:18,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 254 [2023-11-12 02:09:18,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:19,328 INFO L124 PetriNetUnfolderBase]: 1562/2454 cut-off events. [2023-11-12 02:09:19,328 INFO L125 PetriNetUnfolderBase]: For 1181/1181 co-relation queries the response was YES. [2023-11-12 02:09:19,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 2454 events. 1562/2454 cut-off events. For 1181/1181 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12039 event pairs, 414 based on Foata normal form. 90/2526 useless extension candidates. Maximal degree in co-relation 6045. Up to 1699 conditions per place. [2023-11-12 02:09:19,352 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 38 selfloop transitions, 10 changer transitions 13/63 dead transitions. [2023-11-12 02:09:19,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 330 flow [2023-11-12 02:09:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:09:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-11-12 02:09:19,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422572178477693 [2023-11-12 02:09:19,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-11-12 02:09:19,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-11-12 02:09:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:19,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-11-12 02:09:19,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:19,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:19,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:19,366 INFO L175 Difference]: Start difference. First operand has 45 places, 26 transitions, 102 flow. Second operand 6 states and 677 transitions. [2023-11-12 02:09:19,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 330 flow [2023-11-12 02:09:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 318 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-12 02:09:19,374 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 168 flow [2023-11-12 02:09:19,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-11-12 02:09:19,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-12 02:09:19,377 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 168 flow [2023-11-12 02:09:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.33333333333333) internal successors, (632), 6 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:19,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:19,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:19,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:09:19,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:19,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash -937894971, now seen corresponding path program 1 times [2023-11-12 02:09:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:19,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049969736] [2023-11-12 02:09:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:19,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049969736] [2023-11-12 02:09:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049969736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:20,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:20,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:09:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514940989] [2023-11-12 02:09:20,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:20,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:09:20,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:09:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:09:21,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 254 [2023-11-12 02:09:21,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 168 flow. Second operand has 9 states, 9 states have (on average 101.66666666666667) internal successors, (915), 9 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:21,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:21,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 254 [2023-11-12 02:09:21,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:22,034 INFO L124 PetriNetUnfolderBase]: 1893/2951 cut-off events. [2023-11-12 02:09:22,035 INFO L125 PetriNetUnfolderBase]: For 3342/3342 co-relation queries the response was YES. [2023-11-12 02:09:22,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8878 conditions, 2951 events. 1893/2951 cut-off events. For 3342/3342 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15141 event pairs, 330 based on Foata normal form. 122/3038 useless extension candidates. Maximal degree in co-relation 8866. Up to 1763 conditions per place. [2023-11-12 02:09:22,062 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 51 selfloop transitions, 12 changer transitions 14/79 dead transitions. [2023-11-12 02:09:22,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 497 flow [2023-11-12 02:09:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:09:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 766 transitions. [2023-11-12 02:09:22,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43082114735658045 [2023-11-12 02:09:22,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 766 transitions. [2023-11-12 02:09:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 766 transitions. [2023-11-12 02:09:22,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:22,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 766 transitions. [2023-11-12 02:09:22,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.42857142857143) internal successors, (766), 7 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,079 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 168 flow. Second operand 7 states and 766 transitions. [2023-11-12 02:09:22,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 497 flow [2023-11-12 02:09:22,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 488 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:09:22,093 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 256 flow [2023-11-12 02:09:22,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-12 02:09:22,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-11-12 02:09:22,097 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 256 flow [2023-11-12 02:09:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.66666666666667) internal successors, (915), 9 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:22,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:22,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:09:22,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:22,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:22,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1584119571, now seen corresponding path program 2 times [2023-11-12 02:09:22,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:22,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224757724] [2023-11-12 02:09:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224757724] [2023-11-12 02:09:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224757724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131327228] [2023-11-12 02:09:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:23,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:23,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 254 [2023-11-12 02:09:23,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:23,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:23,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 254 [2023-11-12 02:09:23,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:24,329 INFO L124 PetriNetUnfolderBase]: 1816/2829 cut-off events. [2023-11-12 02:09:24,330 INFO L125 PetriNetUnfolderBase]: For 5165/5173 co-relation queries the response was YES. [2023-11-12 02:09:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10295 conditions, 2829 events. 1816/2829 cut-off events. For 5165/5173 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14258 event pairs, 293 based on Foata normal form. 55/2864 useless extension candidates. Maximal degree in co-relation 10281. Up to 1775 conditions per place. [2023-11-12 02:09:24,356 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 60 selfloop transitions, 19 changer transitions 13/94 dead transitions. [2023-11-12 02:09:24,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 698 flow [2023-11-12 02:09:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:09:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:09:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 996 transitions. [2023-11-12 02:09:24,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356955380577428 [2023-11-12 02:09:24,362 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 996 transitions. [2023-11-12 02:09:24,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 996 transitions. [2023-11-12 02:09:24,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:24,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 996 transitions. [2023-11-12 02:09:24,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.66666666666667) internal successors, (996), 9 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:24,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:24,375 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:24,376 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 256 flow. Second operand 9 states and 996 transitions. [2023-11-12 02:09:24,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 698 flow [2023-11-12 02:09:24,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 688 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:24,392 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 354 flow [2023-11-12 02:09:24,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-12 02:09:24,393 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-11-12 02:09:24,394 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 354 flow [2023-11-12 02:09:24,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:24,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:24,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:09:24,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:24,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash 422252699, now seen corresponding path program 3 times [2023-11-12 02:09:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564913961] [2023-11-12 02:09:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:25,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564913961] [2023-11-12 02:09:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564913961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:25,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22836598] [2023-11-12 02:09:25,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:25,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:25,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 254 [2023-11-12 02:09:25,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 254 [2023-11-12 02:09:25,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:26,286 INFO L124 PetriNetUnfolderBase]: 1969/3039 cut-off events. [2023-11-12 02:09:26,287 INFO L125 PetriNetUnfolderBase]: For 10931/10939 co-relation queries the response was YES. [2023-11-12 02:09:26,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12705 conditions, 3039 events. 1969/3039 cut-off events. For 10931/10939 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15402 event pairs, 346 based on Foata normal form. 63/3083 useless extension candidates. Maximal degree in co-relation 12689. Up to 1997 conditions per place. [2023-11-12 02:09:26,319 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 52 selfloop transitions, 21 changer transitions 14/89 dead transitions. [2023-11-12 02:09:26,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 782 flow [2023-11-12 02:09:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:09:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:09:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 882 transitions. [2023-11-12 02:09:26,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340551181102362 [2023-11-12 02:09:26,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 882 transitions. [2023-11-12 02:09:26,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 882 transitions. [2023-11-12 02:09:26,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:26,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 882 transitions. [2023-11-12 02:09:26,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.25) internal successors, (882), 8 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:26,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:26,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:26,334 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 354 flow. Second operand 8 states and 882 transitions. [2023-11-12 02:09:26,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 782 flow [2023-11-12 02:09:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 713 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-11-12 02:09:26,365 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 443 flow [2023-11-12 02:09:26,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=443, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-11-12 02:09:26,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-11-12 02:09:26,367 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 443 flow [2023-11-12 02:09:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:26,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:26,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:26,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:09:26,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:26,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1377617016, now seen corresponding path program 1 times [2023-11-12 02:09:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40255321] [2023-11-12 02:09:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40255321] [2023-11-12 02:09:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40255321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:27,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812138470] [2023-11-12 02:09:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:27,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 254 [2023-11-12 02:09:27,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 443 flow. Second operand has 7 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:27,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:27,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 254 [2023-11-12 02:09:27,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:28,882 INFO L124 PetriNetUnfolderBase]: 2106/3258 cut-off events. [2023-11-12 02:09:28,882 INFO L125 PetriNetUnfolderBase]: For 16808/16832 co-relation queries the response was YES. [2023-11-12 02:09:28,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 3258 events. 2106/3258 cut-off events. For 16808/16832 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16818 event pairs, 317 based on Foata normal form. 92/3319 useless extension candidates. Maximal degree in co-relation 14547. Up to 2183 conditions per place. [2023-11-12 02:09:28,914 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 65 selfloop transitions, 22 changer transitions 12/101 dead transitions. [2023-11-12 02:09:28,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 944 flow [2023-11-12 02:09:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:09:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:09:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 889 transitions. [2023-11-12 02:09:28,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2023-11-12 02:09:28,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 889 transitions. [2023-11-12 02:09:28,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 889 transitions. [2023-11-12 02:09:28,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:28,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 889 transitions. [2023-11-12 02:09:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:28,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:28,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:28,929 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 443 flow. Second operand 8 states and 889 transitions. [2023-11-12 02:09:28,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 944 flow [2023-11-12 02:09:28,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 863 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-11-12 02:09:28,998 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 568 flow [2023-11-12 02:09:28,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-12 02:09:28,999 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-11-12 02:09:28,999 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 568 flow [2023-11-12 02:09:29,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:29,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:29,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:29,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:09:29,001 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:29,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:29,001 INFO L85 PathProgramCache]: Analyzing trace with hash -23029108, now seen corresponding path program 1 times [2023-11-12 02:09:29,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821560669] [2023-11-12 02:09:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:29,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:29,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821560669] [2023-11-12 02:09:29,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821560669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:29,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:29,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:29,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545504975] [2023-11-12 02:09:29,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:30,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 254 [2023-11-12 02:09:30,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 568 flow. Second operand has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:30,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:30,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 254 [2023-11-12 02:09:30,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:31,519 INFO L124 PetriNetUnfolderBase]: 2631/4119 cut-off events. [2023-11-12 02:09:31,520 INFO L125 PetriNetUnfolderBase]: For 20139/20187 co-relation queries the response was YES. [2023-11-12 02:09:31,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19111 conditions, 4119 events. 2631/4119 cut-off events. For 20139/20187 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 22877 event pairs, 223 based on Foata normal form. 68/4153 useless extension candidates. Maximal degree in co-relation 19091. Up to 1966 conditions per place. [2023-11-12 02:09:31,565 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 107 selfloop transitions, 64 changer transitions 20/193 dead transitions. [2023-11-12 02:09:31,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 193 transitions, 1989 flow [2023-11-12 02:09:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:09:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-12 02:09:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1528 transitions. [2023-11-12 02:09:31,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296962879640045 [2023-11-12 02:09:31,575 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1528 transitions. [2023-11-12 02:09:31,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1528 transitions. [2023-11-12 02:09:31,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:31,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1528 transitions. [2023-11-12 02:09:31,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.14285714285714) internal successors, (1528), 14 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:31,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 254.0) internal successors, (3810), 15 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:31,593 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 254.0) internal successors, (3810), 15 states have internal predecessors, (3810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:31,593 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 568 flow. Second operand 14 states and 1528 transitions. [2023-11-12 02:09:31,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 193 transitions, 1989 flow [2023-11-12 02:09:31,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 193 transitions, 1888 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-12 02:09:31,676 INFO L231 Difference]: Finished difference. Result has 83 places, 112 transitions, 1295 flow [2023-11-12 02:09:31,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1295, PETRI_PLACES=83, PETRI_TRANSITIONS=112} [2023-11-12 02:09:31,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-11-12 02:09:31,678 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 112 transitions, 1295 flow [2023-11-12 02:09:31,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.0) internal successors, (816), 8 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:31,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:31,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:31,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:09:31,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:31,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1289471836, now seen corresponding path program 2 times [2023-11-12 02:09:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980076658] [2023-11-12 02:09:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:32,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:32,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980076658] [2023-11-12 02:09:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980076658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:32,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281219355] [2023-11-12 02:09:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:32,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:09:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:09:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:32,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 254 [2023-11-12 02:09:32,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 112 transitions, 1295 flow. Second operand has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:32,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:32,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 254 [2023-11-12 02:09:32,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:33,634 INFO L124 PetriNetUnfolderBase]: 2523/4002 cut-off events. [2023-11-12 02:09:33,634 INFO L125 PetriNetUnfolderBase]: For 32067/32115 co-relation queries the response was YES. [2023-11-12 02:09:33,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21590 conditions, 4002 events. 2523/4002 cut-off events. For 32067/32115 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 22678 event pairs, 286 based on Foata normal form. 96/4072 useless extension candidates. Maximal degree in co-relation 21564. Up to 2365 conditions per place. [2023-11-12 02:09:33,675 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 115 selfloop transitions, 68 changer transitions 9/194 dead transitions. [2023-11-12 02:09:33,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 194 transitions, 2406 flow [2023-11-12 02:09:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:09:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:09:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1219 transitions. [2023-11-12 02:09:33,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43629205440229063 [2023-11-12 02:09:33,682 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1219 transitions. [2023-11-12 02:09:33,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1219 transitions. [2023-11-12 02:09:33,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:33,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1219 transitions. [2023-11-12 02:09:33,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 110.81818181818181) internal successors, (1219), 11 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:33,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:33,699 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:33,700 INFO L175 Difference]: Start difference. First operand has 83 places, 112 transitions, 1295 flow. Second operand 11 states and 1219 transitions. [2023-11-12 02:09:33,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 194 transitions, 2406 flow [2023-11-12 02:09:33,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 194 transitions, 2310 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:33,855 INFO L231 Difference]: Finished difference. Result has 95 places, 140 transitions, 1835 flow [2023-11-12 02:09:33,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1835, PETRI_PLACES=95, PETRI_TRANSITIONS=140} [2023-11-12 02:09:33,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2023-11-12 02:09:33,856 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 140 transitions, 1835 flow [2023-11-12 02:09:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:33,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:33,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:33,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:09:33,857 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:33,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash 8259130, now seen corresponding path program 2 times [2023-11-12 02:09:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539028874] [2023-11-12 02:09:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539028874] [2023-11-12 02:09:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539028874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:35,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:35,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:09:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523225531] [2023-11-12 02:09:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:09:35,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:09:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:09:35,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 254 [2023-11-12 02:09:35,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 140 transitions, 1835 flow. Second operand has 10 states, 10 states have (on average 102.6) internal successors, (1026), 10 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:35,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:35,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 254 [2023-11-12 02:09:35,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:37,236 INFO L124 PetriNetUnfolderBase]: 2476/3937 cut-off events. [2023-11-12 02:09:37,236 INFO L125 PetriNetUnfolderBase]: For 35207/35239 co-relation queries the response was YES. [2023-11-12 02:09:37,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21907 conditions, 3937 events. 2476/3937 cut-off events. For 35207/35239 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 22315 event pairs, 296 based on Foata normal form. 100/4015 useless extension candidates. Maximal degree in co-relation 21876. Up to 2367 conditions per place. [2023-11-12 02:09:37,278 INFO L140 encePairwiseOnDemand]: 247/254 looper letters, 123 selfloop transitions, 42 changer transitions 12/179 dead transitions. [2023-11-12 02:09:37,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 2536 flow [2023-11-12 02:09:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:09:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:09:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 771 transitions. [2023-11-12 02:09:37,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363329583802024 [2023-11-12 02:09:37,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 771 transitions. [2023-11-12 02:09:37,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 771 transitions. [2023-11-12 02:09:37,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:37,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 771 transitions. [2023-11-12 02:09:37,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:37,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:37,292 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:37,292 INFO L175 Difference]: Start difference. First operand has 95 places, 140 transitions, 1835 flow. Second operand 7 states and 771 transitions. [2023-11-12 02:09:37,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 2536 flow [2023-11-12 02:09:37,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 2420 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-11-12 02:09:37,488 INFO L231 Difference]: Finished difference. Result has 101 places, 144 transitions, 1924 flow [2023-11-12 02:09:37,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1924, PETRI_PLACES=101, PETRI_TRANSITIONS=144} [2023-11-12 02:09:37,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-11-12 02:09:37,490 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 144 transitions, 1924 flow [2023-11-12 02:09:37,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 102.6) internal successors, (1026), 10 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:37,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:37,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:09:37,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:37,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1863135892, now seen corresponding path program 3 times [2023-11-12 02:09:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:37,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040344523] [2023-11-12 02:09:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:09:38,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:38,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040344523] [2023-11-12 02:09:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040344523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319239793] [2023-11-12 02:09:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:38,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:09:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:09:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:09:38,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 254 [2023-11-12 02:09:38,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 144 transitions, 1924 flow. Second operand has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:38,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:09:38,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 254 [2023-11-12 02:09:38,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:09:40,251 INFO L124 PetriNetUnfolderBase]: 2625/4151 cut-off events. [2023-11-12 02:09:40,251 INFO L125 PetriNetUnfolderBase]: For 41861/41935 co-relation queries the response was YES. [2023-11-12 02:09:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24431 conditions, 4151 events. 2625/4151 cut-off events. For 41861/41935 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 23639 event pairs, 263 based on Foata normal form. 38/4175 useless extension candidates. Maximal degree in co-relation 24397. Up to 2938 conditions per place. [2023-11-12 02:09:40,304 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 116 selfloop transitions, 78 changer transitions 11/207 dead transitions. [2023-11-12 02:09:40,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 207 transitions, 2982 flow [2023-11-12 02:09:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:09:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:09:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1045 transitions. [2023-11-12 02:09:40,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41141732283464566 [2023-11-12 02:09:40,312 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1045 transitions. [2023-11-12 02:09:40,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1045 transitions. [2023-11-12 02:09:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:09:40,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1045 transitions. [2023-11-12 02:09:40,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.5) internal successors, (1045), 10 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:40,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:40,325 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 254.0) internal successors, (2794), 11 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:40,326 INFO L175 Difference]: Start difference. First operand has 101 places, 144 transitions, 1924 flow. Second operand 10 states and 1045 transitions. [2023-11-12 02:09:40,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 207 transitions, 2982 flow [2023-11-12 02:09:40,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 207 transitions, 2893 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-12 02:09:40,590 INFO L231 Difference]: Finished difference. Result has 109 places, 174 transitions, 2535 flow [2023-11-12 02:09:40,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2535, PETRI_PLACES=109, PETRI_TRANSITIONS=174} [2023-11-12 02:09:40,592 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-11-12 02:09:40,592 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 174 transitions, 2535 flow [2023-11-12 02:09:40,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:09:40,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:09:40,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:09:40,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-12 02:09:40,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1956977542, now seen corresponding path program 4 times [2023-11-12 02:09:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237122773] [2023-11-12 02:09:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:40,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat