./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:13,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:13,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:13,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:13,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:13,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:13,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:13,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:13,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:13,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:13,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:13,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:13,760 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:13,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:13,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:13,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:13,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:13,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:13,764 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:13,765 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:13,765 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:13,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:13,766 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:13,767 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:13,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:13,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:13,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:13,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:13,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:13,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:13,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:13,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:13,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:13,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:13,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:13,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:13,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:13,773 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:13,773 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_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75df8feda97f2ebeb5cc4266066f8deba1b6726a771b6143f22a640cfcf63d2 [2023-11-19 07:45:14,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:14,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:14,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:14,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:14,172 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:14,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:17,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:17,526 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:17,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/sv-benchmarks/c/pthread-wmm/mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:17,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/data/2f1a38e37/b9d790db127946288b878e4759967142/FLAG08c2f9e14 [2023-11-19 07:45:17,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/data/2f1a38e37/b9d790db127946288b878e4759967142 [2023-11-19 07:45:17,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:17,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:17,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:17,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:17,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:17,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:17" (1/1) ... [2023-11-19 07:45:17,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e90175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:17, skipping insertion in model container [2023-11-19 07:45:17,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:17" (1/1) ... [2023-11-19 07:45:17,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:18,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:18,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:18,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:18,206 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:18,206 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:18,214 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:18,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18 WrapperNode [2023-11-19 07:45:18,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:18,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:18,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:18,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:18,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,314 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-19 07:45:18,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:18,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:18,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:18,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:18,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:18,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:18,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:18,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:18,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (1/1) ... [2023-11-19 07:45:18,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:18,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:18,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:18,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f289ca00-bb2d-4837-8d8a-1ced67d65a35/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:18,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:45:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:18,509 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:45:18,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:45:18,510 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:45:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:45:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:45:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:45:18,511 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:45:18,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:45:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:45:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:18,515 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:45:18,741 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:18,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:19,119 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:19,351 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:19,352 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:45:19,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:19 BoogieIcfgContainer [2023-11-19 07:45:19,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:19,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:19,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:19,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:19,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:17" (1/3) ... [2023-11-19 07:45:19,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dea34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:19, skipping insertion in model container [2023-11-19 07:45:19,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:18" (2/3) ... [2023-11-19 07:45:19,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dea34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:19, skipping insertion in model container [2023-11-19 07:45:19,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:19" (3/3) ... [2023-11-19 07:45:19,376 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:19,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:19,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:45:19,403 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:19,476 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:45:19,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 154 transitions, 324 flow [2023-11-19 07:45:19,621 INFO L124 PetriNetUnfolderBase]: 4/150 cut-off events. [2023-11-19 07:45:19,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:19,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 4/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:45:19,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 154 transitions, 324 flow [2023-11-19 07:45:19,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 150 transitions, 312 flow [2023-11-19 07:45:19,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:19,686 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 150 transitions, 312 flow [2023-11-19 07:45:19,689 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 150 transitions, 312 flow [2023-11-19 07:45:19,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 150 transitions, 312 flow [2023-11-19 07:45:19,774 INFO L124 PetriNetUnfolderBase]: 4/150 cut-off events. [2023-11-19 07:45:19,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:19,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 4/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:45:19,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 4418 [2023-11-19 07:45:26,031 INFO L134 LiptonReduction]: Checked pairs total: 12545 [2023-11-19 07:45:26,031 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-11-19 07:45:26,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:26,083 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;@64a95b71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:26,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:45:26,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:26,090 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:45:26,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:26,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:26,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:45:26,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash 662, now seen corresponding path program 1 times [2023-11-19 07:45:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:26,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095642665] [2023-11-19 07:45:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:26,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:26,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095642665] [2023-11-19 07:45:26,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095642665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:26,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:26,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:45:26,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704133285] [2023-11-19 07:45:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:26,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:26,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:26,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 300 [2023-11-19 07:45:26,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:26,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:26,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 300 [2023-11-19 07:45:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:28,883 INFO L124 PetriNetUnfolderBase]: 8719/11822 cut-off events. [2023-11-19 07:45:28,883 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 07:45:28,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23770 conditions, 11822 events. 8719/11822 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 63360 event pairs, 8719 based on Foata normal form. 0/10329 useless extension candidates. Maximal degree in co-relation 23758. Up to 11731 conditions per place. [2023-11-19 07:45:29,002 INFO L140 encePairwiseOnDemand]: 291/300 looper letters, 28 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-19 07:45:29,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 134 flow [2023-11-19 07:45:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-11-19 07:45:29,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183333333333333 [2023-11-19 07:45:29,027 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-11-19 07:45:29,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-11-19 07:45:29,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:29,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-11-19 07:45:29,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,050 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,052 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 2 states and 311 transitions. [2023-11-19 07:45:29,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 134 flow [2023-11-19 07:45:29,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:29,062 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 74 flow [2023-11-19 07:45:29,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-19 07:45:29,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-19 07:45:29,070 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 74 flow [2023-11-19 07:45:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:45:29,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:29,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:29,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash 649715, now seen corresponding path program 1 times [2023-11-19 07:45:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748818183] [2023-11-19 07:45:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:29,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748818183] [2023-11-19 07:45:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748818183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:29,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:29,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303917632] [2023-11-19 07:45:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:29,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:29,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 300 [2023-11-19 07:45:29,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:29,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:29,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 300 [2023-11-19 07:45:29,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:31,419 INFO L124 PetriNetUnfolderBase]: 6855/9885 cut-off events. [2023-11-19 07:45:31,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:31,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 9885 events. 6855/9885 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 62160 event pairs, 1263 based on Foata normal form. 0/9226 useless extension candidates. Maximal degree in co-relation 19319. Up to 7399 conditions per place. [2023-11-19 07:45:31,501 INFO L140 encePairwiseOnDemand]: 297/300 looper letters, 45 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-19 07:45:31,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 220 flow [2023-11-19 07:45:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-11-19 07:45:31,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2023-11-19 07:45:31,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-11-19 07:45:31,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-11-19 07:45:31,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:31,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-11-19 07:45:31,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,520 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 74 flow. Second operand 3 states and 458 transitions. [2023-11-19 07:45:31,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 220 flow [2023-11-19 07:45:31,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:31,524 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 74 flow [2023-11-19 07:45:31,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-19 07:45:31,526 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-19 07:45:31,527 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 74 flow [2023-11-19 07:45:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:31,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:31,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:31,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:31,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:31,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1643337508, now seen corresponding path program 1 times [2023-11-19 07:45:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:31,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447246012] [2023-11-19 07:45:31,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:32,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:32,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447246012] [2023-11-19 07:45:32,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447246012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:32,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:32,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326610447] [2023-11-19 07:45:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:32,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 300 [2023-11-19 07:45:32,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:32,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:32,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 300 [2023-11-19 07:45:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:34,177 INFO L124 PetriNetUnfolderBase]: 4903/6757 cut-off events. [2023-11-19 07:45:34,178 INFO L125 PetriNetUnfolderBase]: For 441/441 co-relation queries the response was YES. [2023-11-19 07:45:34,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14046 conditions, 6757 events. 4903/6757 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35222 event pairs, 1056 based on Foata normal form. 0/6689 useless extension candidates. Maximal degree in co-relation 14042. Up to 6432 conditions per place. [2023-11-19 07:45:34,230 INFO L140 encePairwiseOnDemand]: 295/300 looper letters, 39 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-11-19 07:45:34,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 200 flow [2023-11-19 07:45:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:45:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:45:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2023-11-19 07:45:34,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778 [2023-11-19 07:45:34,235 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2023-11-19 07:45:34,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2023-11-19 07:45:34,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:34,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2023-11-19 07:45:34,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,246 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,246 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 74 flow. Second operand 6 states and 752 transitions. [2023-11-19 07:45:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 200 flow [2023-11-19 07:45:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:34,249 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 76 flow [2023-11-19 07:45:34,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-11-19 07:45:34,250 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2023-11-19 07:45:34,250 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 76 flow [2023-11-19 07:45:34,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:34,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:34,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:34,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:34,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:34,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1643337484, now seen corresponding path program 1 times [2023-11-19 07:45:34,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:34,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858878145] [2023-11-19 07:45:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:34,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:34,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:34,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858878145] [2023-11-19 07:45:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858878145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:34,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:34,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713317273] [2023-11-19 07:45:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:34,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:34,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 300 [2023-11-19 07:45:34,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:34,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:34,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 300 [2023-11-19 07:45:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:38,781 INFO L124 PetriNetUnfolderBase]: 25803/34900 cut-off events. [2023-11-19 07:45:38,782 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2023-11-19 07:45:38,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70659 conditions, 34900 events. 25803/34900 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 191663 event pairs, 9305 based on Foata normal form. 1428/36328 useless extension candidates. Maximal degree in co-relation 70655. Up to 20929 conditions per place. [2023-11-19 07:45:38,986 INFO L140 encePairwiseOnDemand]: 290/300 looper letters, 47 selfloop transitions, 8 changer transitions 37/92 dead transitions. [2023-11-19 07:45:38,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 92 transitions, 392 flow [2023-11-19 07:45:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:45:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2023-11-19 07:45:38,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266666666666667 [2023-11-19 07:45:38,991 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2023-11-19 07:45:38,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2023-11-19 07:45:38,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:38,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2023-11-19 07:45:38,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:38,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,001 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 76 flow. Second operand 5 states and 694 transitions. [2023-11-19 07:45:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 92 transitions, 392 flow [2023-11-19 07:45:39,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 92 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:39,006 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 149 flow [2023-11-19 07:45:39,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=5, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-11-19 07:45:39,009 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-19 07:45:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 149 flow [2023-11-19 07:45:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:39,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:39,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:45:39,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:39,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:39,011 INFO L85 PathProgramCache]: Analyzing trace with hash -596162516, now seen corresponding path program 1 times [2023-11-19 07:45:39,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:39,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336399815] [2023-11-19 07:45:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:39,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:39,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:39,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336399815] [2023-11-19 07:45:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336399815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:39,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:39,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542003769] [2023-11-19 07:45:39,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:39,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 300 [2023-11-19 07:45:39,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:39,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:39,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 300 [2023-11-19 07:45:39,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:43,830 INFO L124 PetriNetUnfolderBase]: 22479/30596 cut-off events. [2023-11-19 07:45:43,830 INFO L125 PetriNetUnfolderBase]: For 21492/21492 co-relation queries the response was YES. [2023-11-19 07:45:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82625 conditions, 30596 events. 22479/30596 cut-off events. For 21492/21492 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 163123 event pairs, 5169 based on Foata normal form. 1344/31940 useless extension candidates. Maximal degree in co-relation 82618. Up to 13763 conditions per place. [2023-11-19 07:45:44,018 INFO L140 encePairwiseOnDemand]: 290/300 looper letters, 59 selfloop transitions, 9 changer transitions 51/119 dead transitions. [2023-11-19 07:45:44,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 119 transitions, 681 flow [2023-11-19 07:45:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:45:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 951 transitions. [2023-11-19 07:45:44,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45285714285714285 [2023-11-19 07:45:44,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 951 transitions. [2023-11-19 07:45:44,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 951 transitions. [2023-11-19 07:45:44,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:44,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 951 transitions. [2023-11-19 07:45:44,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.85714285714286) internal successors, (951), 7 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,035 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 149 flow. Second operand 7 states and 951 transitions. [2023-11-19 07:45:44,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 119 transitions, 681 flow [2023-11-19 07:45:44,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 119 transitions, 627 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:45:44,263 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 215 flow [2023-11-19 07:45:44,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=7, PETRI_FLOW=215, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-19 07:45:44,266 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-19 07:45:44,267 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 215 flow [2023-11-19 07:45:44,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.6) internal successors, (613), 5 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:44,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:44,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:45:44,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:44,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1708920782, now seen corresponding path program 1 times [2023-11-19 07:45:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246336542] [2023-11-19 07:45:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246336542] [2023-11-19 07:45:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246336542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:44,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103832211] [2023-11-19 07:45:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:44,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:44,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 300 [2023-11-19 07:45:44,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:44,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:44,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 300 [2023-11-19 07:45:44,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:48,559 INFO L124 PetriNetUnfolderBase]: 20717/28244 cut-off events. [2023-11-19 07:45:48,560 INFO L125 PetriNetUnfolderBase]: For 41228/41228 co-relation queries the response was YES. [2023-11-19 07:45:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82669 conditions, 28244 events. 20717/28244 cut-off events. For 41228/41228 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 153329 event pairs, 5304 based on Foata normal form. 954/29198 useless extension candidates. Maximal degree in co-relation 82657. Up to 17209 conditions per place. [2023-11-19 07:45:48,786 INFO L140 encePairwiseOnDemand]: 290/300 looper letters, 65 selfloop transitions, 18 changer transitions 41/124 dead transitions. [2023-11-19 07:45:48,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 124 transitions, 775 flow [2023-11-19 07:45:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:45:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:45:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 957 transitions. [2023-11-19 07:45:48,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45571428571428574 [2023-11-19 07:45:48,967 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 957 transitions. [2023-11-19 07:45:48,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 957 transitions. [2023-11-19 07:45:48,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:48,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 957 transitions. [2023-11-19 07:45:48,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.71428571428572) internal successors, (957), 7 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:48,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:48,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:48,994 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 215 flow. Second operand 7 states and 957 transitions. [2023-11-19 07:45:48,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 124 transitions, 775 flow [2023-11-19 07:45:49,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 124 transitions, 756 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-19 07:45:49,243 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 322 flow [2023-11-19 07:45:49,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-11-19 07:45:49,244 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-11-19 07:45:49,244 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 322 flow [2023-11-19 07:45:49,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:49,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:49,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:45:49,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:49,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1434704918, now seen corresponding path program 1 times [2023-11-19 07:45:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573812614] [2023-11-19 07:45:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:49,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:49,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573812614] [2023-11-19 07:45:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573812614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:49,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:49,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723623203] [2023-11-19 07:45:49,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:49,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-11-19 07:45:49,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:49,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:49,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-11-19 07:45:49,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:52,606 INFO L124 PetriNetUnfolderBase]: 14073/20310 cut-off events. [2023-11-19 07:45:52,606 INFO L125 PetriNetUnfolderBase]: For 34705/35712 co-relation queries the response was YES. [2023-11-19 07:45:52,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60132 conditions, 20310 events. 14073/20310 cut-off events. For 34705/35712 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 124853 event pairs, 4178 based on Foata normal form. 950/20689 useless extension candidates. Maximal degree in co-relation 60116. Up to 11879 conditions per place. [2023-11-19 07:45:52,767 INFO L140 encePairwiseOnDemand]: 296/300 looper letters, 46 selfloop transitions, 4 changer transitions 26/91 dead transitions. [2023-11-19 07:45:52,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 631 flow [2023-11-19 07:45:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:45:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2023-11-19 07:45:52,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478 [2023-11-19 07:45:52,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2023-11-19 07:45:52,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2023-11-19 07:45:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:52,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2023-11-19 07:45:52,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:52,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:52,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:52,784 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 322 flow. Second operand 5 states and 717 transitions. [2023-11-19 07:45:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 631 flow [2023-11-19 07:45:53,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 605 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-19 07:45:53,257 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 316 flow [2023-11-19 07:45:53,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2023-11-19 07:45:53,258 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2023-11-19 07:45:53,258 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 316 flow [2023-11-19 07:45:53,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:53,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:53,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:45:53,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:53,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1632404971, now seen corresponding path program 1 times [2023-11-19 07:45:53,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:53,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481480550] [2023-11-19 07:45:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:53,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481480550] [2023-11-19 07:45:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481480550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346857751] [2023-11-19 07:45:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:45:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:53,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:45:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:45:53,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-11-19 07:45:53,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:53,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:53,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-11-19 07:45:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:55,543 INFO L124 PetriNetUnfolderBase]: 10003/14854 cut-off events. [2023-11-19 07:45:55,543 INFO L125 PetriNetUnfolderBase]: For 14774/16259 co-relation queries the response was YES. [2023-11-19 07:45:55,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40314 conditions, 14854 events. 10003/14854 cut-off events. For 14774/16259 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 94869 event pairs, 2079 based on Foata normal form. 1222/15511 useless extension candidates. Maximal degree in co-relation 40299. Up to 6623 conditions per place. [2023-11-19 07:45:55,641 INFO L140 encePairwiseOnDemand]: 293/300 looper letters, 65 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-19 07:45:55,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 631 flow [2023-11-19 07:45:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:45:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:45:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 580 transitions. [2023-11-19 07:45:55,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-11-19 07:45:55,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 580 transitions. [2023-11-19 07:45:55,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 580 transitions. [2023-11-19 07:45:55,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:55,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 580 transitions. [2023-11-19 07:45:55,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,651 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 300.0) internal successors, (1500), 5 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,651 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 316 flow. Second operand 4 states and 580 transitions. [2023-11-19 07:45:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 631 flow [2023-11-19 07:45:55,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 617 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:55,724 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 348 flow [2023-11-19 07:45:55,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-19 07:45:55,725 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-11-19 07:45:55,725 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 348 flow [2023-11-19 07:45:55,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:55,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:45:55,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:55,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 618187161, now seen corresponding path program 1 times [2023-11-19 07:45:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002375452] [2023-11-19 07:45:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002375452] [2023-11-19 07:45:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002375452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:45:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051011786] [2023-11-19 07:45:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:55,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:45:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:45:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:45:55,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-11-19 07:45:55,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:55,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-11-19 07:45:55,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:57,815 INFO L124 PetriNetUnfolderBase]: 7644/11760 cut-off events. [2023-11-19 07:45:57,815 INFO L125 PetriNetUnfolderBase]: For 13401/14566 co-relation queries the response was YES. [2023-11-19 07:45:57,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37364 conditions, 11760 events. 7644/11760 cut-off events. For 13401/14566 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 77205 event pairs, 1787 based on Foata normal form. 821/12047 useless extension candidates. Maximal degree in co-relation 37349. Up to 4370 conditions per place. [2023-11-19 07:45:58,024 INFO L140 encePairwiseOnDemand]: 293/300 looper letters, 83 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-11-19 07:45:58,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 807 flow [2023-11-19 07:45:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:45:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:45:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-11-19 07:45:58,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-11-19 07:45:58,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-11-19 07:45:58,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-11-19 07:45:58,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:58,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-11-19 07:45:58,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:58,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:58,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:58,037 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 348 flow. Second operand 5 states and 728 transitions. [2023-11-19 07:45:58,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 807 flow [2023-11-19 07:45:58,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:45:58,053 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 413 flow [2023-11-19 07:45:58,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-11-19 07:45:58,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-11-19 07:45:58,054 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 413 flow [2023-11-19 07:45:58,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:58,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:58,058 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] [2023-11-19 07:45:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:45:58,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -945445388, now seen corresponding path program 1 times [2023-11-19 07:45:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119303730] [2023-11-19 07:45:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:58,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119303730] [2023-11-19 07:45:58,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119303730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:58,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:58,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:45:58,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154893600] [2023-11-19 07:45:58,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:45:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:45:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:58,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 300 [2023-11-19 07:45:58,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:58,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:58,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 300 [2023-11-19 07:45:58,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:00,042 INFO L124 PetriNetUnfolderBase]: 6978/10738 cut-off events. [2023-11-19 07:46:00,042 INFO L125 PetriNetUnfolderBase]: For 21383/22503 co-relation queries the response was YES. [2023-11-19 07:46:00,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38403 conditions, 10738 events. 6978/10738 cut-off events. For 21383/22503 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 70474 event pairs, 1712 based on Foata normal form. 353/10567 useless extension candidates. Maximal degree in co-relation 38386. Up to 4370 conditions per place. [2023-11-19 07:46:00,114 INFO L140 encePairwiseOnDemand]: 293/300 looper letters, 95 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2023-11-19 07:46:00,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 127 transitions, 961 flow [2023-11-19 07:46:00,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-11-19 07:46:00,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855555555555556 [2023-11-19 07:46:00,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-11-19 07:46:00,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-11-19 07:46:00,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:00,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-11-19 07:46:00,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 300.0) internal successors, (2100), 7 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,129 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 413 flow. Second operand 6 states and 874 transitions. [2023-11-19 07:46:00,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 127 transitions, 961 flow [2023-11-19 07:46:00,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 127 transitions, 945 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:00,164 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 483 flow [2023-11-19 07:46:00,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-11-19 07:46:00,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-11-19 07:46:00,165 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 483 flow [2023-11-19 07:46:00,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:00,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:00,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:00,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:46:00,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:00,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2017919953, now seen corresponding path program 1 times [2023-11-19 07:46:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:00,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707118614] [2023-11-19 07:46:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707118614] [2023-11-19 07:46:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707118614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:01,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:01,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:46:01,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305423419] [2023-11-19 07:46:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:01,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:46:01,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:01,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 300 [2023-11-19 07:46:01,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 483 flow. Second operand has 8 states, 8 states have (on average 129.75) internal successors, (1038), 8 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:01,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 300 [2023-11-19 07:46:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:03,291 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([475] L831-->L847: Formula: (let ((.cse10 (= (mod v_~a$r_buff1_thd4~0_60 256) 0)) (.cse7 (= (mod v_~a$r_buff0_thd4~0_62 256) 0))) (let ((.cse8 (not .cse7)) (.cse3 (and (= (mod v_~a$w_buff1_used~0_133 256) 0) .cse7)) (.cse4 (and .cse7 .cse10)) (.cse11 (= (mod v_~a$w_buff0_used~0_148 256) 0))) (let ((.cse0 (or .cse3 .cse4 .cse11)) (.cse1 (and .cse8 (not .cse11))) (.cse2 (not (= (mod v_~weak$$choice2~0_32 256) 0))) (.cse6 (= (mod v_~a$w_buff1_used~0_132 256) 0)) (.cse5 (= (mod v_~a$w_buff0_used~0_147 256) 0))) (and (= v_~a$w_buff0~0_61 v_~a$w_buff0~0_60) (= (ite .cse0 v_~a~0_93 (ite .cse1 v_~a$w_buff0~0_61 v_~a$w_buff1~0_64)) v_~__unbuffered_p3_EBX~0_10) (= v_~a$w_buff1_used~0_132 (ite .cse2 v_~a$w_buff1_used~0_133 (ite (or .cse3 .cse4 .cse5) v_~a$w_buff1_used~0_133 0))) (= v_~a$flush_delayed~0_25 0) (= (ite .cse2 v_~a$w_buff0_used~0_148 (ite .cse0 v_~a$w_buff0_used~0_148 (ite .cse1 0 v_~a$w_buff0_used~0_148))) v_~a$w_buff0_used~0_147) (= v_~a~0_93 v_~a$mem_tmp~0_18) (= v_~a$r_buff0_thd4~0_61 (ite .cse2 v_~a$r_buff0_thd4~0_62 (ite (or (and .cse6 .cse7) .cse4 .cse5) v_~a$r_buff0_thd4~0_62 (ite (and (not .cse5) .cse8) 0 v_~a$r_buff0_thd4~0_62)))) (= v_~a$w_buff1~0_64 v_~a$w_buff1~0_63) (= v_~a~0_92 (ite .cse2 v_~a$mem_tmp~0_18 v_~__unbuffered_p3_EBX~0_10)) (= v_~a$r_buff1_thd4~0_59 (ite .cse2 v_~a$r_buff1_thd4~0_60 (ite (let ((.cse9 (= (mod v_~a$r_buff0_thd4~0_61 256) 0))) (or (and .cse9 .cse10) (and .cse6 .cse9) .cse5)) v_~a$r_buff1_thd4~0_60 0))))))) InVars {~a~0=v_~a~0_93, ~a$w_buff1~0=v_~a$w_buff1~0_64, ~a$w_buff0~0=v_~a$w_buff0~0_61, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_60, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_148, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_133, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_62} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_59, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_147, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_10, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_61, P3Thread1of1ForFork3_#t~nondet3=|v_P3Thread1of1ForFork3_#t~nondet3_1|, ~a~0=v_~a~0_92, ~a$mem_tmp~0=v_~a$mem_tmp~0_18, ~weak$$choice0~0=v_~weak$$choice0~0_7, P3Thread1of1ForFork3_#t~nondet4=|v_P3Thread1of1ForFork3_#t~nondet4_1|, ~a$w_buff1~0=v_~a$w_buff1~0_63, ~a$flush_delayed~0=v_~a$flush_delayed~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_60, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_132, ~weak$$choice2~0=v_~weak$$choice2~0_32} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, P3Thread1of1ForFork3_#t~nondet3, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, P3Thread1of1ForFork3_#t~nondet4, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0][86], [130#L798true, 262#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1)), Black: 194#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), 166#true, Black: 264#(and (<= ~__unbuffered_cnt~0 2) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256))), Black: 258#(< ~main$tmp_guard0~0 (+ 1 (* (div ~main$tmp_guard0~0 256) 256))), Black: 193#(<= ~__unbuffered_p3_EAX~0 0), Black: 210#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 209#(<= ~x~0 0), P1Thread1of1ForFork2InUse, P3Thread1of1ForFork3InUse, P0Thread1of1ForFork0InUse, 235#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), P2Thread1of1ForFork1InUse, Black: 224#(= ~__unbuffered_p1_EAX~0 0), 16#L811true, 191#true, 100#L847true, Black: 237#(and (= ~__unbuffered_cnt~0 0) (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), 136#P0EXITtrue, 85#L878-3true, 249#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= ~__unbuffered_cnt~0 1) (<= 0 ~main$tmp_guard0~0)), 207#true, Black: 245#(and (<= ~main$tmp_guard0~0 (* (div ~main$tmp_guard0~0 256) 256)) (<= 0 ~main$tmp_guard0~0)), Black: 182#(or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0))), Black: 185#(and (not (= |ULTIMATE.start___VERIFIER_assert_~expression#1| 0)) (or (not (= 2 ~__unbuffered_p1_EAX~0)) (not (= ~__unbuffered_p3_EAX~0 1)) (not (= ~__unbuffered_p1_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EBX~0 0)) (not (= ~__unbuffered_p2_EAX~0 0)))), 279#(and (= ~a$r_buff1_thd4~0 0) (= ~a$w_buff1_used~0 0) (= ~__unbuffered_p3_EBX~0 1) (= ~a~0 1) (= ~a$w_buff0_used~0 0) (= ~a$w_buff0~0 1) (= ~a$r_buff0_thd4~0 0)), 178#(and (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (= |ULTIMATE.start_main_old_#valid#1| (store (store (store (store |#valid| |ULTIMATE.start_main_~#t353~0#1.base| 0) |ULTIMATE.start_main_~#t354~0#1.base| 0) |ULTIMATE.start_main_~#t356~0#1.base| 0) |ULTIMATE.start_main_~#t355~0#1.base| 0)) (not (= |ULTIMATE.start_main_~#t355~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t354~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t355~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t354~0#1.base|)) (not (= |ULTIMATE.start_main_~#t356~0#1.base| |ULTIMATE.start_main_~#t353~0#1.base|)))]) [2023-11-19 07:46:03,291 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is not cut-off event [2023-11-19 07:46:03,292 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-19 07:46:03,292 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-19 07:46:03,292 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event