./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 e7bb482b 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_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/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_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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-e7bb482 [2023-11-06 22:48:39,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:39,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:48:39,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:39,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:40,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:40,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:40,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:40,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:40,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:40,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:40,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:40,032 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:40,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:40,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:48:40,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:48:40,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:48:40,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:40,035 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:48:40,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:48:40,036 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:48:40,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:40,037 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:48:40,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:48:40,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:48:40,038 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:40,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:40,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:40,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:40,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:40,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:40,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:40,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:48:40,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:48:40,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:40,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:40,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:40,044 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:40,044 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_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a744aa24a15b244d86986861038a45981c329f5578e2da992d82373e2f73c5a [2023-11-06 22:48:40,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:40,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:40,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:40,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:40,339 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:40,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:48:43,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:43,714 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:43,715 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/sv-benchmarks/c/pthread-wmm/mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:48:43,750 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/data/bfb5ebfd1/672d154ae5f249d8a25a6f8f99380513/FLAGdf1e1bcda [2023-11-06 22:48:43,766 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/data/bfb5ebfd1/672d154ae5f249d8a25a6f8f99380513 [2023-11-06 22:48:43,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:43,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:43,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:43,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:43,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:43,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:43" (1/1) ... [2023-11-06 22:48:43,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3771fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:43, skipping insertion in model container [2023-11-06 22:48:43,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:43" (1/1) ... [2023-11-06 22:48:43,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:44,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:44,372 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:44,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:44,474 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:44,474 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:48:44,482 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:44,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44 WrapperNode [2023-11-06 22:48:44,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:44,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:44,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:44,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:44,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,566 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-06 22:48:44,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:44,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:44,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:44,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:44,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:44,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:44,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:44,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:44,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (1/1) ... [2023-11-06 22:48:44,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:44,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:44,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b936c3c9-fab6-4e47-ab31-6ffc842f3b36/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:48:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:48:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:48:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:48:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:48:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:48:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:48:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:48:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:48:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:48:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:48:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:48:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:48:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:48:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:44,713 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:48:44,915 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:44,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:45,398 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:45,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:45,618 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:48:45,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:45 BoogieIcfgContainer [2023-11-06 22:48:45,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:45,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:45,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:45,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:45,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:43" (1/3) ... [2023-11-06 22:48:45,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a285559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:45, skipping insertion in model container [2023-11-06 22:48:45,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:44" (2/3) ... [2023-11-06 22:48:45,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a285559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:45, skipping insertion in model container [2023-11-06 22:48:45,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:45" (3/3) ... [2023-11-06 22:48:45,632 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_power.oepc_pso.oepc_rmo.oepc.i [2023-11-06 22:48:45,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:45,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-06 22:48:45,654 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:48:45,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:48:45,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 318 flow [2023-11-06 22:48:45,972 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-06 22:48:45,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:45,980 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. [2023-11-06 22:48:45,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 151 transitions, 318 flow [2023-11-06 22:48:45,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 147 transitions, 306 flow [2023-11-06 22:48:45,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:48:46,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-06 22:48:46,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-06 22:48:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 306 flow [2023-11-06 22:48:46,054 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-06 22:48:46,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:46,056 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. [2023-11-06 22:48:46,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 4064 [2023-11-06 22:48:52,082 INFO L134 LiptonReduction]: Checked pairs total: 11155 [2023-11-06 22:48:52,083 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-06 22:48:52,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:52,107 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;@7b3f7f1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:52,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-06 22:48:52,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:48:52,109 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:48:52,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:52,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:52,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:48:52,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:48:52,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:52,117 INFO L85 PathProgramCache]: Analyzing trace with hash 651, now seen corresponding path program 1 times [2023-11-06 22:48:52,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:52,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467897165] [2023-11-06 22:48:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:52,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467897165] [2023-11-06 22:48:52,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467897165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:52,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:48:52,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213432309] [2023-11-06 22:48:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:52,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:48:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:48:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:48:52,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-11-06 22:48:52,296 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) [2023-11-06 22:48:52,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:52,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-11-06 22:48:52,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:54,466 INFO L124 PetriNetUnfolderBase]: 8719/11811 cut-off events. [2023-11-06 22:48:54,467 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:48:54,499 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. [2023-11-06 22:48:54,586 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-06 22:48:54,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 132 flow [2023-11-06 22:48:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:48:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:48:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 307 transitions. [2023-11-06 22:48:54,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256849315068494 [2023-11-06 22:48:54,609 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 307 transitions. [2023-11-06 22:48:54,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 307 transitions. [2023-11-06 22:48:54,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:54,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 307 transitions. [2023-11-06 22:48:54,626 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) [2023-11-06 22:48:54,634 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) [2023-11-06 22:48:54,635 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) [2023-11-06 22:48:54,638 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 307 transitions. [2023-11-06 22:48:54,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 132 flow [2023-11-06 22:48:54,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:48:54,651 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-06 22:48:54,653 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} [2023-11-06 22:48:54,657 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-06 22:48:54,657 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-06 22:48:54,658 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) [2023-11-06 22:48:54,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:54,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:48:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:48:54,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:48:54,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 641985, now seen corresponding path program 1 times [2023-11-06 22:48:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:54,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410686078] [2023-11-06 22:48:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410686078] [2023-11-06 22:48:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410686078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:48:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887119311] [2023-11-06 22:48:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:55,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 292 [2023-11-06 22:48:55,003 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) [2023-11-06 22:48:55,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:55,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 292 [2023-11-06 22:48:55,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:48:56,653 INFO L124 PetriNetUnfolderBase]: 6855/9882 cut-off events. [2023-11-06 22:48:56,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:48:56,676 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. [2023-11-06 22:48:56,732 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 45 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-06 22:48:56,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-11-06 22:48:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:48:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:48:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-06 22:48:56,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2023-11-06 22:48:56,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-06 22:48:56,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-06 22:48:56,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:48:56,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-06 22:48:56,743 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) [2023-11-06 22:48:56,749 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) [2023-11-06 22:48:56,753 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) [2023-11-06 22:48:56,753 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 452 transitions. [2023-11-06 22:48:56,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-11-06 22:48:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:48:56,756 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-06 22:48:56,757 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} [2023-11-06 22:48:56,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-06 22:48:56,759 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-06 22:48:56,760 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) [2023-11-06 22:48:56,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:48:56,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:56,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:48:56,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:48:56,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 170689819, now seen corresponding path program 1 times [2023-11-06 22:48:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199136299] [2023-11-06 22:48:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:57,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:48:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199136299] [2023-11-06 22:48:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199136299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:57,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:57,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:48:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519704105] [2023-11-06 22:48:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:48:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:48:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:48:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:48:57,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:48:57,210 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) [2023-11-06 22:48:57,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:48:57,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:48:57,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:01,408 INFO L124 PetriNetUnfolderBase]: 23689/31854 cut-off events. [2023-11-06 22:49:01,408 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2023-11-06 22:49:01,453 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. [2023-11-06 22:49:01,581 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 47 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-11-06 22:49:01,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 238 flow [2023-11-06 22:49:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-06 22:49:01,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920091324200913 [2023-11-06 22:49:01,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-06 22:49:01,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-06 22:49:01,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:01,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-06 22:49:01,587 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) [2023-11-06 22:49:01,590 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) [2023-11-06 22:49:01,591 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) [2023-11-06 22:49:01,591 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 431 transitions. [2023-11-06 22:49:01,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 238 flow [2023-11-06 22:49:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:01,594 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 130 flow [2023-11-06 22:49:01,595 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} [2023-11-06 22:49:01,595 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-06 22:49:01,596 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 130 flow [2023-11-06 22:49:01,596 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) [2023-11-06 22:49:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:01,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:49:01,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:01,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 996414344, now seen corresponding path program 1 times [2023-11-06 22:49:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762660463] [2023-11-06 22:49:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762660463] [2023-11-06 22:49:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762660463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:01,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:49:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284408125] [2023-11-06 22:49:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:01,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:01,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:49:01,919 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) [2023-11-06 22:49:01,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:01,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:49:01,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:05,272 INFO L124 PetriNetUnfolderBase]: 22607/30404 cut-off events. [2023-11-06 22:49:05,272 INFO L125 PetriNetUnfolderBase]: For 11590/11590 co-relation queries the response was YES. [2023-11-06 22:49:05,321 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. [2023-11-06 22:49:05,472 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 62 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2023-11-06 22:49:05,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 370 flow [2023-11-06 22:49:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:49:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-11-06 22:49:05,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2023-11-06 22:49:05,476 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-11-06 22:49:05,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-11-06 22:49:05,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:05,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-11-06 22:49:05,480 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) [2023-11-06 22:49:05,484 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) [2023-11-06 22:49:05,485 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) [2023-11-06 22:49:05,486 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 130 flow. Second operand 4 states and 566 transitions. [2023-11-06 22:49:05,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 370 flow [2023-11-06 22:49:05,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:49:05,753 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 182 flow [2023-11-06 22:49:05,754 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} [2023-11-06 22:49:05,756 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-06 22:49:05,756 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 182 flow [2023-11-06 22:49:05,757 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) [2023-11-06 22:49:05,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:05,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:05,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:49:05,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:05,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash 996418149, now seen corresponding path program 1 times [2023-11-06 22:49:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433529595] [2023-11-06 22:49:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:06,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433529595] [2023-11-06 22:49:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433529595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005536062] [2023-11-06 22:49:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:06,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:06,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:06,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 292 [2023-11-06 22:49:06,827 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) [2023-11-06 22:49:06,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:06,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 292 [2023-11-06 22:49:06,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:10,173 INFO L124 PetriNetUnfolderBase]: 18004/25352 cut-off events. [2023-11-06 22:49:10,174 INFO L125 PetriNetUnfolderBase]: For 14965/15487 co-relation queries the response was YES. [2023-11-06 22:49:10,234 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. [2023-11-06 22:49:10,373 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 56 selfloop transitions, 6 changer transitions 20/91 dead transitions. [2023-11-06 22:49:10,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 490 flow [2023-11-06 22:49:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 884 transitions. [2023-11-06 22:49:10,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2023-11-06 22:49:10,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 884 transitions. [2023-11-06 22:49:10,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 884 transitions. [2023-11-06 22:49:10,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:10,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 884 transitions. [2023-11-06 22:49:10,383 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) [2023-11-06 22:49:10,389 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) [2023-11-06 22:49:10,390 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) [2023-11-06 22:49:10,391 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 182 flow. Second operand 7 states and 884 transitions. [2023-11-06 22:49:10,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 490 flow [2023-11-06 22:49:10,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 91 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:10,496 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 192 flow [2023-11-06 22:49:10,496 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} [2023-11-06 22:49:10,497 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-06 22:49:10,497 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 192 flow [2023-11-06 22:49:10,498 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) [2023-11-06 22:49:10,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:10,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:49:10,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:10,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 740815786, now seen corresponding path program 1 times [2023-11-06 22:49:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120966149] [2023-11-06 22:49:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120966149] [2023-11-06 22:49:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120966149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:49:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475847224] [2023-11-06 22:49:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:10,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2023-11-06 22:49:10,736 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) [2023-11-06 22:49:10,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:10,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2023-11-06 22:49:10,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:13,453 INFO L124 PetriNetUnfolderBase]: 16116/22558 cut-off events. [2023-11-06 22:49:13,453 INFO L125 PetriNetUnfolderBase]: For 16554/16962 co-relation queries the response was YES. [2023-11-06 22:49:13,502 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. [2023-11-06 22:49:13,594 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 51 selfloop transitions, 7 changer transitions 0/66 dead transitions. [2023-11-06 22:49:13,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 411 flow [2023-11-06 22:49:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:49:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-06 22:49:13,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068493150684932 [2023-11-06 22:49:13,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-06 22:49:13,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-06 22:49:13,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:13,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-06 22:49:13,600 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) [2023-11-06 22:49:13,602 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) [2023-11-06 22:49:13,602 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) [2023-11-06 22:49:13,603 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 192 flow. Second operand 3 states and 444 transitions. [2023-11-06 22:49:13,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 411 flow [2023-11-06 22:49:13,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 389 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:49:13,697 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 249 flow [2023-11-06 22:49:13,697 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} [2023-11-06 22:49:13,699 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-06 22:49:13,703 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 249 flow [2023-11-06 22:49:13,703 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) [2023-11-06 22:49:13,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:13,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:49:13,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:13,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1490472457, now seen corresponding path program 1 times [2023-11-06 22:49:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672128107] [2023-11-06 22:49:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672128107] [2023-11-06 22:49:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672128107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:13,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:13,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679694368] [2023-11-06 22:49:13,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:13,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:13,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:13,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:49:13,926 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) [2023-11-06 22:49:13,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:13,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:49:13,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:16,397 INFO L124 PetriNetUnfolderBase]: 11019/16140 cut-off events. [2023-11-06 22:49:16,397 INFO L125 PetriNetUnfolderBase]: For 10526/11146 co-relation queries the response was YES. [2023-11-06 22:49:16,434 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. [2023-11-06 22:49:16,651 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 80 selfloop transitions, 10 changer transitions 2/106 dead transitions. [2023-11-06 22:49:16,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 658 flow [2023-11-06 22:49:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:49:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-06 22:49:16,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876712328767124 [2023-11-06 22:49:16,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-06 22:49:16,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-06 22:49:16,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:16,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-06 22:49:16,660 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) [2023-11-06 22:49:16,663 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) [2023-11-06 22:49:16,664 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) [2023-11-06 22:49:16,664 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 249 flow. Second operand 5 states and 699 transitions. [2023-11-06 22:49:16,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 658 flow [2023-11-06 22:49:16,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:16,688 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 317 flow [2023-11-06 22:49:16,688 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} [2023-11-06 22:49:16,689 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-11-06 22:49:16,689 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 317 flow [2023-11-06 22:49:16,690 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) [2023-11-06 22:49:16,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:16,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:16,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:49:16,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:16,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1916777732, now seen corresponding path program 1 times [2023-11-06 22:49:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239517844] [2023-11-06 22:49:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239517844] [2023-11-06 22:49:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239517844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:49:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035910533] [2023-11-06 22:49:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:49:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:49:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:17,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:49:17,022 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) [2023-11-06 22:49:17,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:17,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:49:17,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:18,644 INFO L124 PetriNetUnfolderBase]: 7327/11158 cut-off events. [2023-11-06 22:49:18,644 INFO L125 PetriNetUnfolderBase]: For 11255/11670 co-relation queries the response was YES. [2023-11-06 22:49:18,675 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. [2023-11-06 22:49:18,703 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 111 selfloop transitions, 19 changer transitions 1/145 dead transitions. [2023-11-06 22:49:18,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 145 transitions, 975 flow [2023-11-06 22:49:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 980 transitions. [2023-11-06 22:49:18,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2023-11-06 22:49:18,708 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 980 transitions. [2023-11-06 22:49:18,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 980 transitions. [2023-11-06 22:49:18,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:18,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 980 transitions. [2023-11-06 22:49:18,713 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) [2023-11-06 22:49:18,717 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) [2023-11-06 22:49:18,718 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) [2023-11-06 22:49:18,718 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 317 flow. Second operand 7 states and 980 transitions. [2023-11-06 22:49:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 145 transitions, 975 flow [2023-11-06 22:49:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 145 transitions, 970 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:49:18,767 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 446 flow [2023-11-06 22:49:18,767 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} [2023-11-06 22:49:18,768 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-06 22:49:18,768 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 446 flow [2023-11-06 22:49:18,769 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) [2023-11-06 22:49:18,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:18,769 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] [2023-11-06 22:49:18,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:49:18,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:18,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -588166520, now seen corresponding path program 1 times [2023-11-06 22:49:18,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:18,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929294845] [2023-11-06 22:49:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929294845] [2023-11-06 22:49:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929294845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:19,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907916986] [2023-11-06 22:49:19,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:19,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:49:19,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:49:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:49:19,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:49:19,086 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) [2023-11-06 22:49:19,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:19,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:49:19,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:21,069 INFO L124 PetriNetUnfolderBase]: 6290/9554 cut-off events. [2023-11-06 22:49:21,069 INFO L125 PetriNetUnfolderBase]: For 16171/16553 co-relation queries the response was YES. [2023-11-06 22:49:21,091 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. [2023-11-06 22:49:21,113 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 124 selfloop transitions, 28 changer transitions 11/177 dead transitions. [2023-11-06 22:49:21,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 177 transitions, 1299 flow [2023-11-06 22:49:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:49:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:49:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1259 transitions. [2023-11-06 22:49:21,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790715372907154 [2023-11-06 22:49:21,120 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1259 transitions. [2023-11-06 22:49:21,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1259 transitions. [2023-11-06 22:49:21,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:21,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1259 transitions. [2023-11-06 22:49:21,125 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) [2023-11-06 22:49:21,130 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) [2023-11-06 22:49:21,131 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) [2023-11-06 22:49:21,131 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 446 flow. Second operand 9 states and 1259 transitions. [2023-11-06 22:49:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 177 transitions, 1299 flow [2023-11-06 22:49:21,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 177 transitions, 1249 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 22:49:21,572 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 564 flow [2023-11-06 22:49:21,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=564, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-11-06 22:49:21,573 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-06 22:49:21,573 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 564 flow [2023-11-06 22:49:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-06 22:49:21,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:21,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:21,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:49:21,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:21,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2011187640, now seen corresponding path program 1 times [2023-11-06 22:49:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114347561] [2023-11-06 22:49:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:22,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114347561] [2023-11-06 22:49:22,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114347561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:22,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:49:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532591046] [2023-11-06 22:49:22,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:22,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2023-11-06 22:49:22,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:22,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:22,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2023-11-06 22:49:22,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:25,042 INFO L124 PetriNetUnfolderBase]: 9324/14669 cut-off events. [2023-11-06 22:49:25,042 INFO L125 PetriNetUnfolderBase]: For 40909/41346 co-relation queries the response was YES. [2023-11-06 22:49:25,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56783 conditions, 14669 events. 9324/14669 cut-off events. For 40909/41346 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 102378 event pairs, 1240 based on Foata normal form. 168/14512 useless extension candidates. Maximal degree in co-relation 56764. Up to 4920 conditions per place. [2023-11-06 22:49:25,126 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 208 selfloop transitions, 11 changer transitions 16/249 dead transitions. [2023-11-06 22:49:25,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 249 transitions, 2511 flow [2023-11-06 22:49:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:49:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 997 transitions. [2023-11-06 22:49:25,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877690802348337 [2023-11-06 22:49:25,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 997 transitions. [2023-11-06 22:49:25,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 997 transitions. [2023-11-06 22:49:25,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:25,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 997 transitions. [2023-11-06 22:49:25,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:25,139 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) [2023-11-06 22:49:25,140 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) [2023-11-06 22:49:25,140 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 564 flow. Second operand 7 states and 997 transitions. [2023-11-06 22:49:25,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 249 transitions, 2511 flow [2023-11-06 22:49:26,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 249 transitions, 2052 flow, removed 162 selfloop flow, removed 4 redundant places. [2023-11-06 22:49:26,881 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 594 flow [2023-11-06 22:49:26,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-11-06 22:49:26,883 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-11-06 22:49:26,883 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 594 flow [2023-11-06 22:49:26,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:26,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:26,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:26,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:49:26,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:26,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:26,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1505482528, now seen corresponding path program 2 times [2023-11-06 22:49:26,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:26,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3841295] [2023-11-06 22:49:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3841295] [2023-11-06 22:49:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3841295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:49:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254628395] [2023-11-06 22:49:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:27,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:49:27,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 594 flow. Second operand has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:27,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:27,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:49:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:29,363 INFO L124 PetriNetUnfolderBase]: 9165/14167 cut-off events. [2023-11-06 22:49:29,364 INFO L125 PetriNetUnfolderBase]: For 28616/29145 co-relation queries the response was YES. [2023-11-06 22:49:29,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52882 conditions, 14167 events. 9165/14167 cut-off events. For 28616/29145 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 97744 event pairs, 767 based on Foata normal form. 265/14085 useless extension candidates. Maximal degree in co-relation 52859. Up to 3403 conditions per place. [2023-11-06 22:49:29,452 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 161 selfloop transitions, 33 changer transitions 17/224 dead transitions. [2023-11-06 22:49:29,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 224 transitions, 1788 flow [2023-11-06 22:49:29,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:49:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:49:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1510 transitions. [2023-11-06 22:49:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701120797011208 [2023-11-06 22:49:29,459 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1510 transitions. [2023-11-06 22:49:29,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1510 transitions. [2023-11-06 22:49:29,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:29,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1510 transitions. [2023-11-06 22:49:29,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.27272727272728) internal successors, (1510), 11 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:29,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:29,472 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:29,473 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 594 flow. Second operand 11 states and 1510 transitions. [2023-11-06 22:49:29,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 224 transitions, 1788 flow [2023-11-06 22:49:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 224 transitions, 1756 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:49:31,034 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 658 flow [2023-11-06 22:49:31,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=658, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-06 22:49:31,036 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2023-11-06 22:49:31,036 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 658 flow [2023-11-06 22:49:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:31,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:31,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:49:31,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:31,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1488657085, now seen corresponding path program 1 times [2023-11-06 22:49:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564479373] [2023-11-06 22:49:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564479373] [2023-11-06 22:49:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564479373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:31,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982725575] [2023-11-06 22:49:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:31,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:31,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2023-11-06 22:49:31,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:31,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:31,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2023-11-06 22:49:31,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:49:34,645 INFO L124 PetriNetUnfolderBase]: 14859/23260 cut-off events. [2023-11-06 22:49:34,645 INFO L125 PetriNetUnfolderBase]: For 68537/69148 co-relation queries the response was YES. [2023-11-06 22:49:34,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96512 conditions, 23260 events. 14859/23260 cut-off events. For 68537/69148 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 172024 event pairs, 2866 based on Foata normal form. 305/23215 useless extension candidates. Maximal degree in co-relation 96488. Up to 10598 conditions per place. [2023-11-06 22:49:34,836 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 147 selfloop transitions, 4 changer transitions 14/175 dead transitions. [2023-11-06 22:49:34,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 175 transitions, 1768 flow [2023-11-06 22:49:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:49:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:49:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-11-06 22:49:34,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948630136986301 [2023-11-06 22:49:34,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-11-06 22:49:34,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-11-06 22:49:34,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:49:34,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-11-06 22:49:34,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:34,843 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) [2023-11-06 22:49:34,844 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) [2023-11-06 22:49:34,844 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 658 flow. Second operand 4 states and 578 transitions. [2023-11-06 22:49:34,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 175 transitions, 1768 flow [2023-11-06 22:49:40,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 175 transitions, 1477 flow, removed 65 selfloop flow, removed 10 redundant places. [2023-11-06 22:49:40,374 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 550 flow [2023-11-06 22:49:40,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-11-06 22:49:40,375 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2023-11-06 22:49:40,375 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 550 flow [2023-11-06 22:49:40,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:40,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:49:40,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:40,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:49:40,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:49:40,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 570655011, now seen corresponding path program 2 times [2023-11-06 22:49:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354937968] [2023-11-06 22:49:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354937968] [2023-11-06 22:49:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354937968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:40,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:40,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614151444] [2023-11-06 22:49:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:40,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:40,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2023-11-06 22:49:40,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:40,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:49:40,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2023-11-06 22:49:40,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand