./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix047_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/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_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/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_bb566be5-fc2a-405a-84ac-3519e1b20fe6/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 dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:28,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:28,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:38:28,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:28,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:28,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:28,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:28,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:28,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:38:28,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:38:28,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:28,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:28,554 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:28,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:28,556 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:38:28,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:28,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:38:28,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:28,558 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:38:28,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:38:28,560 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:38:28,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:38:28,561 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:38:28,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:38:28,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:38:28,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:28,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:28,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:28,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:38:28,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:28,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:28,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:38:28,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:28,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:38:28,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:38:28,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:38:28,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:38:28,575 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:38:28,575 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_bb566be5-fc2a-405a-84ac-3519e1b20fe6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcc3fad0768415d67ba0b5226238487b935d262c55e83ab1790d239680fbb73d [2023-11-19 07:38:28,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:28,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:28,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:28,980 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:28,981 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:28,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:38:32,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:32,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:32,465 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/sv-benchmarks/c/pthread-wmm/mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:38:32,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/data/adc39002f/2b7703a23cd6436a99656d7f041f84ba/FLAGb9dac358e [2023-11-19 07:38:32,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/data/adc39002f/2b7703a23cd6436a99656d7f041f84ba [2023-11-19 07:38:32,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:32,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:32,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:32,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:32,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:32,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:32" (1/1) ... [2023-11-19 07:38:32,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7f3288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:32, skipping insertion in model container [2023-11-19 07:38:32,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:32" (1/1) ... [2023-11-19 07:38:32,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:33,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:33,099 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:33,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:33,229 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:33,230 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:33,238 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:33,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33 WrapperNode [2023-11-19 07:38:33,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:33,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:33,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:33,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:33,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,374 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2023-11-19 07:38:33,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:33,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:33,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:33,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:33,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:33,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:33,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:33,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:33,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (1/1) ... [2023-11-19 07:38:33,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:33,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:33,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:33,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb566be5-fc2a-405a-84ac-3519e1b20fe6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:38:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:38:33,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:38:33,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:38:33,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:38:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:38:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:38:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:38:33,598 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:38:33,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:38:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:33,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:38:33,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:33,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:33,603 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 07:38:33,765 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:33,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:34,212 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:34,392 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:34,392 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:38:34,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:34 BoogieIcfgContainer [2023-11-19 07:38:34,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:34,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:34,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:34,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:34,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:38:32" (1/3) ... [2023-11-19 07:38:34,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b43794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:34, skipping insertion in model container [2023-11-19 07:38:34,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:33" (2/3) ... [2023-11-19 07:38:34,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b43794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:34, skipping insertion in model container [2023-11-19 07:38:34,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:34" (3/3) ... [2023-11-19 07:38:34,408 INFO L112 eAbstractionObserver]: Analyzing ICFG mix047_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:38:34,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:34,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:38:34,431 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:38:34,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:38:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:38:34,727 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:38:34,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:34,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 4/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:38:34,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:38:34,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 148 transitions, 308 flow [2023-11-19 07:38:34,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:38:34,777 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:38:34,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:38:34,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 148 transitions, 308 flow [2023-11-19 07:38:34,834 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:38:34,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:34,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 4/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:38:34,849 INFO L119 LiptonReduction]: Number of co-enabled transitions 4380 [2023-11-19 07:38:40,551 INFO L134 LiptonReduction]: Checked pairs total: 11442 [2023-11-19 07:38:40,551 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:38:40,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:40,575 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;@7ecbf663, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:40,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:38:40,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:40,578 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:38:40,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:40,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:40,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:38:40,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:38:40,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash 661, now seen corresponding path program 1 times [2023-11-19 07:38:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:40,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090732212] [2023-11-19 07:38:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,751 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 07:38:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090732212] [2023-11-19 07:38:40,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090732212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:40,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:40,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:38:40,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299797163] [2023-11-19 07:38:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:38:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:38:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:38:40,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 302 [2023-11-19 07:38:40,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:40,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:40,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 302 [2023-11-19 07:38:40,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:43,272 INFO L124 PetriNetUnfolderBase]: 8719/11886 cut-off events. [2023-11-19 07:38:43,274 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:38:43,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23834 conditions, 11886 events. 8719/11886 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 62501 event pairs, 8719 based on Foata normal form. 0/10394 useless extension candidates. Maximal degree in co-relation 23822. Up to 11731 conditions per place. [2023-11-19 07:38:43,385 INFO L140 encePairwiseOnDemand]: 293/302 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:38:43,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 132 flow [2023-11-19 07:38:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:38:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:38:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 307 transitions. [2023-11-19 07:38:43,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082781456953642 [2023-11-19 07:38:43,402 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 307 transitions. [2023-11-19 07:38:43,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 307 transitions. [2023-11-19 07:38:43,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:43,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 307 transitions. [2023-11-19 07:38:43,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 07:38:43,417 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 07:38:43,419 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 307 transitions. [2023-11-19 07:38:43,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 132 flow [2023-11-19 07:38:43,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:43,427 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:38:43,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:38:43,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:38:43,433 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:38:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:43,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:43,435 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 07:38:43,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 652653, now seen corresponding path program 1 times [2023-11-19 07:38:43,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:43,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916690625] [2023-11-19 07:38:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:43,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:43,748 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 07:38:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916690625] [2023-11-19 07:38:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916690625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:43,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:43,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374078128] [2023-11-19 07:38:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:43,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:43,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 302 [2023-11-19 07:38:43,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:43,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 302 [2023-11-19 07:38:43,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:45,630 INFO L124 PetriNetUnfolderBase]: 6855/9897 cut-off events. [2023-11-19 07:38:45,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:45,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19334 conditions, 9897 events. 6855/9897 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 59935 event pairs, 1263 based on Foata normal form. 0/9239 useless extension candidates. Maximal degree in co-relation 19331. Up to 7399 conditions per place. [2023-11-19 07:38:45,714 INFO L140 encePairwiseOnDemand]: 299/302 looper letters, 45 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-19 07:38:45,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-11-19 07:38:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-19 07:38:45,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988962472406181 [2023-11-19 07:38:45,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-19 07:38:45,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-19 07:38:45,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:45,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-19 07:38:45,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:45,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:38:45,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:38:45,738 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 452 transitions. [2023-11-19 07:38:45,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-11-19 07:38:45,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:45,740 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:38:45,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:38:45,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:38:45,743 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:38:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:45,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:45,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:38:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2074475648, now seen corresponding path program 1 times [2023-11-19 07:38:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485561281] [2023-11-19 07:38:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:46,196 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 07:38:46,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485561281] [2023-11-19 07:38:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485561281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:46,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517814260] [2023-11-19 07:38:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:46,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:46,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-11-19 07:38:46,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 07:38:46,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:46,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-11-19 07:38:46,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:47,861 INFO L124 PetriNetUnfolderBase]: 7337/10054 cut-off events. [2023-11-19 07:38:47,861 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2023-11-19 07:38:47,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20681 conditions, 10054 events. 7337/10054 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 50586 event pairs, 3671 based on Foata normal form. 0/9680 useless extension candidates. Maximal degree in co-relation 20677. Up to 9289 conditions per place. [2023-11-19 07:38:47,933 INFO L140 encePairwiseOnDemand]: 298/302 looper letters, 44 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-11-19 07:38:47,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 214 flow [2023-11-19 07:38:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-11-19 07:38:47,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900662251655629 [2023-11-19 07:38:47,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-11-19 07:38:47,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-11-19 07:38:47,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:47,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-11-19 07:38:47,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:47,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:38:47,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:38:47,944 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 444 transitions. [2023-11-19 07:38:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 214 flow [2023-11-19 07:38:47,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:47,947 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 87 flow [2023-11-19 07:38:47,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-19 07:38:47,949 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:38:47,949 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 87 flow [2023-11-19 07:38:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 07:38:47,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:47,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:47,954 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 07:38:47,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash 115760917, now seen corresponding path program 1 times [2023-11-19 07:38:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:47,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388708419] [2023-11-19 07:38:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:47,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:48,232 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 07:38:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:48,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388708419] [2023-11-19 07:38:48,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388708419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:48,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036999578] [2023-11-19 07:38:48,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:48,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:48,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:38:48,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 07:38:48,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:48,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:38:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:52,207 INFO L124 PetriNetUnfolderBase]: 21383/28728 cut-off events. [2023-11-19 07:38:52,207 INFO L125 PetriNetUnfolderBase]: For 3538/3538 co-relation queries the response was YES. [2023-11-19 07:38:52,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61724 conditions, 28728 events. 21383/28728 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 148931 event pairs, 4161 based on Foata normal form. 674/29402 useless extension candidates. Maximal degree in co-relation 61719. Up to 11840 conditions per place. [2023-11-19 07:38:52,373 INFO L140 encePairwiseOnDemand]: 292/302 looper letters, 60 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2023-11-19 07:38:52,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 327 flow [2023-11-19 07:38:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2023-11-19 07:38:52,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46274834437086093 [2023-11-19 07:38:52,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2023-11-19 07:38:52,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2023-11-19 07:38:52,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:52,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2023-11-19 07:38:52,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states 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 07:38:52,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:52,385 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:52,385 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 87 flow. Second operand 4 states and 559 transitions. [2023-11-19 07:38:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 327 flow [2023-11-19 07:38:52,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:52,389 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 176 flow [2023-11-19 07:38:52,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=84, 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=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-11-19 07:38:52,390 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-19 07:38:52,390 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 176 flow [2023-11-19 07:38:52,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 07:38:52,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:52,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:52,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:52,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:38:52,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:52,393 INFO L85 PathProgramCache]: Analyzing trace with hash 115765019, now seen corresponding path program 1 times [2023-11-19 07:38:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:52,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123420738] [2023-11-19 07:38:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:52,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:53,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123420738] [2023-11-19 07:38:53,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123420738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:53,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:53,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:53,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794481984] [2023-11-19 07:38:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:53,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:53,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:53,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:53,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 302 [2023-11-19 07:38:53,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 07:38:53,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:53,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 302 [2023-11-19 07:38:53,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:57,495 INFO L124 PetriNetUnfolderBase]: 17809/25016 cut-off events. [2023-11-19 07:38:57,495 INFO L125 PetriNetUnfolderBase]: For 15713/15928 co-relation queries the response was YES. [2023-11-19 07:38:57,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64297 conditions, 25016 events. 17809/25016 cut-off events. For 15713/15928 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 149738 event pairs, 2665 based on Foata normal form. 1020/25416 useless extension candidates. Maximal degree in co-relation 64290. Up to 17675 conditions per place. [2023-11-19 07:38:57,661 INFO L140 encePairwiseOnDemand]: 295/302 looper letters, 60 selfloop transitions, 5 changer transitions 20/93 dead transitions. [2023-11-19 07:38:57,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 93 transitions, 516 flow [2023-11-19 07:38:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:38:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:38:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 891 transitions. [2023-11-19 07:38:57,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42147587511825924 [2023-11-19 07:38:57,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 891 transitions. [2023-11-19 07:38:57,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 891 transitions. [2023-11-19 07:38:57,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:57,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 891 transitions. [2023-11-19 07:38:57,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 07:38:57,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 07:38:57,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 07:38:57,678 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 176 flow. Second operand 7 states and 891 transitions. [2023-11-19 07:38:57,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 93 transitions, 516 flow [2023-11-19 07:38:57,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:57,718 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 190 flow [2023-11-19 07:38:57,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-19 07:38:57,720 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-19 07:38:57,720 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 190 flow [2023-11-19 07:38:57,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 07:38:57,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:57,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:57,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:38:57,722 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 07:38:57,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1700361207, now seen corresponding path program 1 times [2023-11-19 07:38:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:57,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735647907] [2023-11-19 07:38:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:57,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:57,954 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 07:38:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735647907] [2023-11-19 07:38:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735647907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:57,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:57,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417677286] [2023-11-19 07:38:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:57,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:57,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:57,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-11-19 07:38:57,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 07:38:57,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:57,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-11-19 07:38:57,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:00,772 INFO L124 PetriNetUnfolderBase]: 16068/22366 cut-off events. [2023-11-19 07:39:00,773 INFO L125 PetriNetUnfolderBase]: For 17048/17528 co-relation queries the response was YES. [2023-11-19 07:39:00,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59213 conditions, 22366 events. 16068/22366 cut-off events. For 17048/17528 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 127854 event pairs, 5803 based on Foata normal form. 124/22192 useless extension candidates. Maximal degree in co-relation 59203. Up to 20119 conditions per place. [2023-11-19 07:39:00,928 INFO L140 encePairwiseOnDemand]: 298/302 looper letters, 54 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-19 07:39:00,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 415 flow [2023-11-19 07:39:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-11-19 07:39:00,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878587196467991 [2023-11-19 07:39:00,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-11-19 07:39:00,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-11-19 07:39:00,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:00,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-11-19 07:39:00,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 07:39:00,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:39:00,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:39:00,938 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 190 flow. Second operand 3 states and 442 transitions. [2023-11-19 07:39:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 415 flow [2023-11-19 07:39:01,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 397 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-19 07:39:01,012 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 223 flow [2023-11-19 07:39:01,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-19 07:39:01,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-19 07:39:01,016 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 223 flow [2023-11-19 07:39:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 07:39:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:01,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:01,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:01,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:01,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash -479063641, now seen corresponding path program 1 times [2023-11-19 07:39:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578657266] [2023-11-19 07:39:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:01,979 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 07:39:01,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578657266] [2023-11-19 07:39:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578657266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:01,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131565836] [2023-11-19 07:39:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:02,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 302 [2023-11-19 07:39:02,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 07:39:02,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:02,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 302 [2023-11-19 07:39:02,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:05,074 INFO L124 PetriNetUnfolderBase]: 12316/17462 cut-off events. [2023-11-19 07:39:05,074 INFO L125 PetriNetUnfolderBase]: For 16898/17464 co-relation queries the response was YES. [2023-11-19 07:39:05,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48037 conditions, 17462 events. 12316/17462 cut-off events. For 16898/17464 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 102578 event pairs, 2802 based on Foata normal form. 898/17934 useless extension candidates. Maximal degree in co-relation 48027. Up to 12497 conditions per place. [2023-11-19 07:39:05,170 INFO L140 encePairwiseOnDemand]: 296/302 looper letters, 48 selfloop transitions, 4 changer transitions 21/84 dead transitions. [2023-11-19 07:39:05,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 520 flow [2023-11-19 07:39:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 861 transitions. [2023-11-19 07:39:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40728476821192056 [2023-11-19 07:39:05,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 861 transitions. [2023-11-19 07:39:05,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 861 transitions. [2023-11-19 07:39:05,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:05,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 861 transitions. [2023-11-19 07:39:05,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.0) internal successors, (861), 7 states have internal predecessors, (861), 0 states have call successors, (0), 0 states 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 07:39:05,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 07:39:05,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 07:39:05,188 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 223 flow. Second operand 7 states and 861 transitions. [2023-11-19 07:39:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 520 flow [2023-11-19 07:39:05,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:05,195 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 212 flow [2023-11-19 07:39:05,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-11-19 07:39:05,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-19 07:39:05,198 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 212 flow [2023-11-19 07:39:05,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 07:39:05,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:05,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:05,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:05,199 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 07:39:05,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1212275987, now seen corresponding path program 1 times [2023-11-19 07:39:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164009602] [2023-11-19 07:39:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:05,360 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 07:39:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:05,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164009602] [2023-11-19 07:39:05,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164009602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:05,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:05,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605870836] [2023-11-19 07:39:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:05,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 302 [2023-11-19 07:39:05,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 212 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 07:39:05,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:05,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 302 [2023-11-19 07:39:05,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:08,056 INFO L124 PetriNetUnfolderBase]: 14323/20501 cut-off events. [2023-11-19 07:39:08,056 INFO L125 PetriNetUnfolderBase]: For 19486/19666 co-relation queries the response was YES. [2023-11-19 07:39:08,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53228 conditions, 20501 events. 14323/20501 cut-off events. For 19486/19666 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 126031 event pairs, 6324 based on Foata normal form. 330/20210 useless extension candidates. Maximal degree in co-relation 53218. Up to 10915 conditions per place. [2023-11-19 07:39:08,173 INFO L140 encePairwiseOnDemand]: 299/302 looper letters, 51 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-11-19 07:39:08,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 403 flow [2023-11-19 07:39:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-11-19 07:39:08,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878587196467991 [2023-11-19 07:39:08,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-11-19 07:39:08,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-11-19 07:39:08,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:08,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-11-19 07:39:08,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 07:39:08,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:39:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 07:39:08,182 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 212 flow. Second operand 3 states and 442 transitions. [2023-11-19 07:39:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 403 flow [2023-11-19 07:39:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 388 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:39:08,188 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 223 flow [2023-11-19 07:39:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-19 07:39:08,189 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-19 07:39:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 223 flow [2023-11-19 07:39:08,190 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 07:39:08,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:08,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:39:08,191 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 07:39:08,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1677267188, now seen corresponding path program 1 times [2023-11-19 07:39:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:08,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55663079] [2023-11-19 07:39:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:08,351 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 07:39:08,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:08,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55663079] [2023-11-19 07:39:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55663079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:08,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:08,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958974479] [2023-11-19 07:39:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:08,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:08,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:08,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:39:08,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 07:39:08,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:08,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:39:08,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:13,805 INFO L124 PetriNetUnfolderBase]: 28432/39275 cut-off events. [2023-11-19 07:39:13,805 INFO L125 PetriNetUnfolderBase]: For 39482/39482 co-relation queries the response was YES. [2023-11-19 07:39:13,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103587 conditions, 39275 events. 28432/39275 cut-off events. For 39482/39482 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 234323 event pairs, 5286 based on Foata normal form. 300/39575 useless extension candidates. Maximal degree in co-relation 103577. Up to 16896 conditions per place. [2023-11-19 07:39:13,955 INFO L140 encePairwiseOnDemand]: 292/302 looper letters, 66 selfloop transitions, 21 changer transitions 3/90 dead transitions. [2023-11-19 07:39:13,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 582 flow [2023-11-19 07:39:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 565 transitions. [2023-11-19 07:39:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46771523178807944 [2023-11-19 07:39:13,958 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 565 transitions. [2023-11-19 07:39:13,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 565 transitions. [2023-11-19 07:39:13,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:13,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 565 transitions. [2023-11-19 07:39:13,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 07:39:13,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,964 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:13,964 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 223 flow. Second operand 4 states and 565 transitions. [2023-11-19 07:39:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 582 flow [2023-11-19 07:39:14,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 90 transitions, 565 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:14,020 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 380 flow [2023-11-19 07:39:14,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-19 07:39:14,021 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-19 07:39:14,022 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 380 flow [2023-11-19 07:39:14,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 07:39:14,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:14,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:14,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:39:14,023 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 07:39:14,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:14,023 INFO L85 PathProgramCache]: Analyzing trace with hash -227878285, now seen corresponding path program 1 times [2023-11-19 07:39:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:14,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057613246] [2023-11-19 07:39:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:14,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:14,193 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 07:39:14,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057613246] [2023-11-19 07:39:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057613246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:14,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:14,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:14,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856643457] [2023-11-19 07:39:14,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:14,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 302 [2023-11-19 07:39:14,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 07:39:14,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:14,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 302 [2023-11-19 07:39:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:18,324 INFO L124 PetriNetUnfolderBase]: 18003/26746 cut-off events. [2023-11-19 07:39:18,324 INFO L125 PetriNetUnfolderBase]: For 35887/37023 co-relation queries the response was YES. [2023-11-19 07:39:18,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71937 conditions, 26746 events. 18003/26746 cut-off events. For 35887/37023 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 187593 event pairs, 3050 based on Foata normal form. 2345/28567 useless extension candidates. Maximal degree in co-relation 71925. Up to 16925 conditions per place. [2023-11-19 07:39:18,435 INFO L140 encePairwiseOnDemand]: 295/302 looper letters, 108 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2023-11-19 07:39:18,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 134 transitions, 1123 flow [2023-11-19 07:39:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:39:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:39:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 697 transitions. [2023-11-19 07:39:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46158940397350995 [2023-11-19 07:39:18,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 697 transitions. [2023-11-19 07:39:18,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 697 transitions. [2023-11-19 07:39:18,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:18,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 697 transitions. [2023-11-19 07:39:18,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 07:39:18,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 07:39:18,447 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states 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 07:39:18,447 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 380 flow. Second operand 5 states and 697 transitions. [2023-11-19 07:39:18,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 134 transitions, 1123 flow [2023-11-19 07:39:18,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 134 transitions, 1107 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:18,461 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 451 flow [2023-11-19 07:39:18,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-11-19 07:39:18,463 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-11-19 07:39:18,463 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 451 flow [2023-11-19 07:39:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 07:39:18,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:18,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:18,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:39:18,464 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 07:39:18,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1038269284, now seen corresponding path program 1 times [2023-11-19 07:39:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316021422] [2023-11-19 07:39:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:18,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:18,659 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 07:39:18,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:18,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316021422] [2023-11-19 07:39:18,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316021422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:18,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:18,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:18,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036791934] [2023-11-19 07:39:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:18,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 302 [2023-11-19 07:39:18,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 451 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:18,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:18,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 302 [2023-11-19 07:39:18,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand