./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/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_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/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_f5fbc65d-8790-44e6-baf7-0948f4e6c282/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 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:12,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:12,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:18:12,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:12,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:12,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:12,651 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:12,652 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:12,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:12,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:12,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:12,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:12,656 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:12,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:12,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:12,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:12,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:12,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:12,661 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:18:12,662 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:18:12,662 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:18:12,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:12,664 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:18:12,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:12,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:12,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:12,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:12,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:12,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:12,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:12,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:12,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:12,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:12,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:12,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:12,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:12,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:12,673 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:12,673 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_f5fbc65d-8790-44e6-baf7-0948f4e6c282/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a [2023-11-12 02:18:13,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:13,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:13,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:13,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:13,144 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:13,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:18:16,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:17,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:17,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:18:17,296 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/data/d18f8f8ee/d359833193624a64a4dfb33d53a8ed76/FLAG68acdb616 [2023-11-12 02:18:17,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/data/d18f8f8ee/d359833193624a64a4dfb33d53a8ed76 [2023-11-12 02:18:17,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:17,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:17,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:17,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:17,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:17,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:17" (1/1) ... [2023-11-12 02:18:17,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fee62ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:17, skipping insertion in model container [2023-11-12 02:18:17,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:17" (1/1) ... [2023-11-12 02:18:17,446 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:18,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:18,132 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:18,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:18,259 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:18,260 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:18,270 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:18,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18 WrapperNode [2023-11-12 02:18:18,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:18,273 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:18,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:18,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:18,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,346 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-12 02:18:18,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:18,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:18,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:18,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:18,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:18,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:18,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:18,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:18,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (1/1) ... [2023-11-12 02:18:18,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:18,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:18,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:18,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5fbc65d-8790-44e6-baf7-0948f4e6c282/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:18:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:18:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:18:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:18:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:18:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:18:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:18:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:18:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:18,560 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 02:18:18,777 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:18,779 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:19,306 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:19,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:19,507 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:19,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:19 BoogieIcfgContainer [2023-11-12 02:18:19,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:19,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:19,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:19,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:19,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:17" (1/3) ... [2023-11-12 02:18:19,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bed4a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:19, skipping insertion in model container [2023-11-12 02:18:19,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:18" (2/3) ... [2023-11-12 02:18:19,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bed4a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:19, skipping insertion in model container [2023-11-12 02:18:19,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:19" (3/3) ... [2023-11-12 02:18:19,524 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-12 02:18:19,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:19,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:18:19,552 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:19,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:18:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 318 flow [2023-11-12 02:18:19,774 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-12 02:18:19,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-12 02:18:19,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 151 transitions, 318 flow [2023-11-12 02:18:19,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:19,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:19,813 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:19,817 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:19,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:19,866 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-12 02:18:19,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-11-12 02:18:19,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 4064 [2023-11-12 02:18:27,132 INFO L134 LiptonReduction]: Checked pairs total: 11155 [2023-11-12 02:18:27,132 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-12 02:18:27,153 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:27,162 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;@8d61b27, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:27,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:18:27,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:27,165 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:18:27,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:27,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:27,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:18:27,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 651, now seen corresponding path program 1 times [2023-11-12 02:18:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:27,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754049121] [2023-11-12 02:18:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:27,374 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 02:18:27,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:27,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754049121] [2023-11-12 02:18:27,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754049121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:27,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:27,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:18:27,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854915701] [2023-11-12 02:18:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:27,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-11-12 02:18:27,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:27,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:27,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-11-12 02:18:27,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:30,191 INFO L124 PetriNetUnfolderBase]: 8719/11811 cut-off events. [2023-11-12 02:18:30,191 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-12 02:18:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23759 conditions, 11811 events. 8719/11811 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 61171 event pairs, 8719 based on Foata normal form. 0/10304 useless extension candidates. Maximal degree in co-relation 23747. Up to 11731 conditions per place. [2023-11-12 02:18:30,333 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-12 02:18:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 132 flow [2023-11-12 02:18:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 307 transitions. [2023-11-12 02:18:30,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256849315068494 [2023-11-12 02:18:30,361 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 307 transitions. [2023-11-12 02:18:30,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 307 transitions. [2023-11-12 02:18:30,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:30,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 307 transitions. [2023-11-12 02:18:30,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 02:18:30,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 02:18:30,385 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 02:18:30,388 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 307 transitions. [2023-11-12 02:18:30,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 132 flow [2023-11-12 02:18:30,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:30,402 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-12 02:18:30,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-12 02:18:30,410 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-12 02:18:30,410 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-12 02:18:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:30,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:18:30,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:30,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:30,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 641985, now seen corresponding path program 1 times [2023-11-12 02:18:30,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:30,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71842217] [2023-11-12 02:18:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:30,899 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 02:18:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:30,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71842217] [2023-11-12 02:18:30,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71842217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804513817] [2023-11-12 02:18:30,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:30,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 292 [2023-11-12 02:18:30,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:30,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 292 [2023-11-12 02:18:30,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:33,017 INFO L124 PetriNetUnfolderBase]: 6855/9882 cut-off events. [2023-11-12 02:18:33,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:33,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19319 conditions, 9882 events. 6855/9882 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 59754 event pairs, 1263 based on Foata normal form. 0/9221 useless extension candidates. Maximal degree in co-relation 19316. Up to 7399 conditions per place. [2023-11-12 02:18:33,118 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 45 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-12 02:18:33,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-11-12 02:18:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-12 02:18:33,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2023-11-12 02:18:33,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-12 02:18:33,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-12 02:18:33,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:33,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-12 02:18:33,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 02:18:33,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:33,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:33,131 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 452 transitions. [2023-11-12 02:18:33,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-11-12 02:18:33,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:33,134 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-12 02:18:33,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-12 02:18:33,135 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-12 02:18:33,135 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-12 02:18:33,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:33,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:33,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:33,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:33,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash 170689819, now seen corresponding path program 1 times [2023-11-12 02:18:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923348961] [2023-11-12 02:18:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:33,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:33,523 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 02:18:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923348961] [2023-11-12 02:18:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923348961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:33,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:33,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369153271] [2023-11-12 02:18:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:33,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:33,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:33,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:18:33,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 02:18:33,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:33,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:18:33,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:38,552 INFO L124 PetriNetUnfolderBase]: 23689/31854 cut-off events. [2023-11-12 02:18:38,552 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2023-11-12 02:18:38,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65437 conditions, 31854 events. 23689/31854 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 172148 event pairs, 8655 based on Foata normal form. 0/31124 useless extension candidates. Maximal degree in co-relation 65433. Up to 20183 conditions per place. [2023-11-12 02:18:38,829 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 47 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-11-12 02:18:38,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 238 flow [2023-11-12 02:18:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-12 02:18:38,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920091324200913 [2023-11-12 02:18:38,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-12 02:18:38,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-12 02:18:38,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:38,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-12 02:18:38,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 02:18:38,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:38,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:38,844 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 431 transitions. [2023-11-12 02:18:38,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 238 flow [2023-11-12 02:18:38,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:38,849 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 130 flow [2023-11-12 02:18:38,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-12 02:18:38,852 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-12 02:18:38,852 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 130 flow [2023-11-12 02:18:38,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 02:18:38,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:38,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:38,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:38,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:38,861 INFO L85 PathProgramCache]: Analyzing trace with hash 996414344, now seen corresponding path program 1 times [2023-11-12 02:18:38,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773642071] [2023-11-12 02:18:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:39,371 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 02:18:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773642071] [2023-11-12 02:18:39,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773642071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:39,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:39,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789466326] [2023-11-12 02:18:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:39,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:39,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:18:39,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:18:39,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:39,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:18:39,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:43,824 INFO L124 PetriNetUnfolderBase]: 22607/30404 cut-off events. [2023-11-12 02:18:43,825 INFO L125 PetriNetUnfolderBase]: For 11590/11590 co-relation queries the response was YES. [2023-11-12 02:18:43,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75812 conditions, 30404 events. 22607/30404 cut-off events. For 11590/11590 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 158806 event pairs, 6116 based on Foata normal form. 230/30634 useless extension candidates. Maximal degree in co-relation 75807. Up to 13783 conditions per place. [2023-11-12 02:18:44,114 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 62 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2023-11-12 02:18:44,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 370 flow [2023-11-12 02:18:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-11-12 02:18:44,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2023-11-12 02:18:44,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-11-12 02:18:44,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-11-12 02:18:44,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:44,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-11-12 02:18:44,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 02:18:44,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 02:18:44,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 02:18:44,132 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 130 flow. Second operand 4 states and 566 transitions. [2023-11-12 02:18:44,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 370 flow [2023-11-12 02:18:44,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:44,597 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 182 flow [2023-11-12 02:18:44,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-12 02:18:44,600 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-12 02:18:44,600 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 182 flow [2023-11-12 02:18:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states 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 02:18:44,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:44,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:44,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:44,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash 996418149, now seen corresponding path program 1 times [2023-11-12 02:18:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514094998] [2023-11-12 02:18:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,566 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 02:18:45,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:45,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514094998] [2023-11-12 02:18:45,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514094998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854267177] [2023-11-12 02:18:45,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:46,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 292 [2023-11-12 02:18:46,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 117.71428571428571) internal successors, (824), 7 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 02:18:46,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:46,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 292 [2023-11-12 02:18:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:49,996 INFO L124 PetriNetUnfolderBase]: 18004/25352 cut-off events. [2023-11-12 02:18:49,996 INFO L125 PetriNetUnfolderBase]: For 14965/15487 co-relation queries the response was YES. [2023-11-12 02:18:50,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63956 conditions, 25352 events. 18004/25352 cut-off events. For 14965/15487 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 151060 event pairs, 2981 based on Foata normal form. 1129/26045 useless extension candidates. Maximal degree in co-relation 63949. Up to 16518 conditions per place. [2023-11-12 02:18:50,215 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 56 selfloop transitions, 6 changer transitions 20/91 dead transitions. [2023-11-12 02:18:50,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 490 flow [2023-11-12 02:18:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 884 transitions. [2023-11-12 02:18:50,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2023-11-12 02:18:50,222 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 884 transitions. [2023-11-12 02:18:50,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 884 transitions. [2023-11-12 02:18:50,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:50,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 884 transitions. [2023-11-12 02:18:50,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states 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 02:18:50,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 02:18:50,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 02:18:50,244 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 182 flow. Second operand 7 states and 884 transitions. [2023-11-12 02:18:50,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 490 flow [2023-11-12 02:18:50,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 91 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:50,383 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 192 flow [2023-11-12 02:18:50,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-12 02:18:50,386 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-12 02:18:50,387 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 192 flow [2023-11-12 02:18:50,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.71428571428571) internal successors, (824), 7 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 02:18:50,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:50,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:50,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:50,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 740815786, now seen corresponding path program 1 times [2023-11-12 02:18:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232562988] [2023-11-12 02:18:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:50,785 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 02:18:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:50,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232562988] [2023-11-12 02:18:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232562988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:50,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261436112] [2023-11-12 02:18:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:50,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2023-11-12 02:18:50,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 02:18:50,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:50,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2023-11-12 02:18:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:53,898 INFO L124 PetriNetUnfolderBase]: 16116/22558 cut-off events. [2023-11-12 02:18:53,899 INFO L125 PetriNetUnfolderBase]: For 16554/16962 co-relation queries the response was YES. [2023-11-12 02:18:54,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57981 conditions, 22558 events. 16116/22558 cut-off events. For 16554/16962 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 129614 event pairs, 8099 based on Foata normal form. 58/22222 useless extension candidates. Maximal degree in co-relation 57971. Up to 20740 conditions per place. [2023-11-12 02:18:54,134 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 51 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-11-12 02:18:54,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 411 flow [2023-11-12 02:18:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-12 02:18:54,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068493150684932 [2023-11-12 02:18:54,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-12 02:18:54,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-12 02:18:54,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:54,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-12 02:18:54,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 02:18:54,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:54,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 02:18:54,146 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 192 flow. Second operand 3 states and 444 transitions. [2023-11-12 02:18:54,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 411 flow [2023-11-12 02:18:54,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 389 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:54,291 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 249 flow [2023-11-12 02:18:54,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-11-12 02:18:54,294 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-12 02:18:54,295 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 249 flow [2023-11-12 02:18:54,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 02:18:54,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:54,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:54,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:54,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:54,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1490472457, now seen corresponding path program 1 times [2023-11-12 02:18:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146219976] [2023-11-12 02:18:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:54,590 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 02:18:54,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146219976] [2023-11-12 02:18:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146219976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:54,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:54,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231888201] [2023-11-12 02:18:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:54,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:54,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:54,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:54,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:18:54,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 02:18:54,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:18:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:57,066 INFO L124 PetriNetUnfolderBase]: 11019/16140 cut-off events. [2023-11-12 02:18:57,067 INFO L125 PetriNetUnfolderBase]: For 10526/11146 co-relation queries the response was YES. [2023-11-12 02:18:57,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40806 conditions, 16140 events. 11019/16140 cut-off events. For 10526/11146 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 99962 event pairs, 2116 based on Foata normal form. 1123/16879 useless extension candidates. Maximal degree in co-relation 40796. Up to 11146 conditions per place. [2023-11-12 02:18:57,181 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 80 selfloop transitions, 10 changer transitions 2/106 dead transitions. [2023-11-12 02:18:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 658 flow [2023-11-12 02:18:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-12 02:18:57,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876712328767124 [2023-11-12 02:18:57,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-12 02:18:57,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-12 02:18:57,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:57,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-12 02:18:57,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states 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 02:18:57,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 02:18:57,194 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states 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 02:18:57,194 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 249 flow. Second operand 5 states and 699 transitions. [2023-11-12 02:18:57,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 658 flow [2023-11-12 02:18:57,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:57,221 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 317 flow [2023-11-12 02:18:57,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-11-12 02:18:57,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-11-12 02:18:57,222 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 317 flow [2023-11-12 02:18:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 02:18:57,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:57,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:57,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1916777732, now seen corresponding path program 1 times [2023-11-12 02:18:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296098325] [2023-11-12 02:18:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:57,482 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 02:18:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:57,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296098325] [2023-11-12 02:18:57,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296098325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:57,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:57,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321047025] [2023-11-12 02:18:57,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:18:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 02:18:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:57,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:18:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:59,116 INFO L124 PetriNetUnfolderBase]: 7327/11158 cut-off events. [2023-11-12 02:18:59,116 INFO L125 PetriNetUnfolderBase]: For 11255/11670 co-relation queries the response was YES. [2023-11-12 02:18:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34667 conditions, 11158 events. 7327/11158 cut-off events. For 11255/11670 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 70126 event pairs, 962 based on Foata normal form. 754/11633 useless extension candidates. Maximal degree in co-relation 34654. Up to 3332 conditions per place. [2023-11-12 02:18:59,189 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 111 selfloop transitions, 19 changer transitions 1/145 dead transitions. [2023-11-12 02:18:59,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 145 transitions, 975 flow [2023-11-12 02:18:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 980 transitions. [2023-11-12 02:18:59,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2023-11-12 02:18:59,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 980 transitions. [2023-11-12 02:18:59,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 980 transitions. [2023-11-12 02:18:59,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:59,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 980 transitions. [2023-11-12 02:18:59,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 02:18:59,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 02:18:59,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 02:18:59,205 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 317 flow. Second operand 7 states and 980 transitions. [2023-11-12 02:18:59,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 145 transitions, 975 flow [2023-11-12 02:18:59,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 970 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:59,257 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 446 flow [2023-11-12 02:18:59,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-12 02:18:59,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-12 02:18:59,258 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 446 flow [2023-11-12 02:18:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 02:18:59,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:59,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:59,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:59,259 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:59,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -588166520, now seen corresponding path program 1 times [2023-11-12 02:18:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:59,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653774544] [2023-11-12 02:18:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:59,662 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 02:18:59,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653774544] [2023-11-12 02:18:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653774544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:59,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847794749] [2023-11-12 02:18:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:59,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-12 02:18:59,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states 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 02:18:59,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:59,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-12 02:18:59,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:01,377 INFO L124 PetriNetUnfolderBase]: 6290/9554 cut-off events. [2023-11-12 02:19:01,377 INFO L125 PetriNetUnfolderBase]: For 16171/16553 co-relation queries the response was YES. [2023-11-12 02:19:01,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34265 conditions, 9554 events. 6290/9554 cut-off events. For 16171/16553 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 59689 event pairs, 727 based on Foata normal form. 349/9637 useless extension candidates. Maximal degree in co-relation 34249. Up to 3018 conditions per place. [2023-11-12 02:19:01,451 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 124 selfloop transitions, 28 changer transitions 11/177 dead transitions. [2023-11-12 02:19:01,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 177 transitions, 1299 flow [2023-11-12 02:19:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:19:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:19:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1259 transitions. [2023-11-12 02:19:01,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790715372907154 [2023-11-12 02:19:01,458 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1259 transitions. [2023-11-12 02:19:01,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1259 transitions. [2023-11-12 02:19:01,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:01,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1259 transitions. [2023-11-12 02:19:01,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.88888888888889) internal successors, (1259), 9 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states 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 02:19:01,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 02:19:01,471 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 02:19:01,471 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 446 flow. Second operand 9 states and 1259 transitions. [2023-11-12 02:19:01,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 177 transitions, 1299 flow