./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/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_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/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_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/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 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:25,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:25,356 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:54:25,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:25,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:25,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:25,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:25,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:25,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:25,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:25,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:25,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:25,416 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:25,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:25,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:25,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:25,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:25,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:25,421 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:25,421 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:25,421 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:25,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:25,423 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:25,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:25,423 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:25,424 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:25,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:25,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:25,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:25,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:25,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:25,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:25,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:25,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:25,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:25,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:25,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:25,429 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:25,430 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_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 [2023-11-19 07:54:25,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:25,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:25,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:25,796 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:25,797 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:25,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-19 07:54:28,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:29,295 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:29,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-19 07:54:29,315 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/data/3c72702af/8381afea3b9047f88b69fef703de6233/FLAG0b6e443d5 [2023-11-19 07:54:29,334 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/data/3c72702af/8381afea3b9047f88b69fef703de6233 [2023-11-19 07:54:29,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:29,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:29,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:29,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:29,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:29,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:29" (1/1) ... [2023-11-19 07:54:29,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f945e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:29, skipping insertion in model container [2023-11-19 07:54:29,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:29" (1/1) ... [2023-11-19 07:54:29,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:29,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:29,921 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:30,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:30,093 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:30,094 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:30,102 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:30,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30 WrapperNode [2023-11-19 07:54:30,103 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:30,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:30,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:30,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:30,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,210 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-19 07:54:30,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:30,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:30,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:30,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:30,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:30,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:30,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:30,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:30,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (1/1) ... [2023-11-19 07:54:30,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:30,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:30,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227c7ea2-3ffc-4759-940c-30f3c1e5dd17/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:54:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:54:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:54:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:54:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:54:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:54:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:54:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:54:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:54:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:54:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:30,386 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 07:54:30,549 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:30,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:31,057 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:31,346 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:31,346 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:54:31,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:31 BoogieIcfgContainer [2023-11-19 07:54:31,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:31,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:31,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:31,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:31,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:29" (1/3) ... [2023-11-19 07:54:31,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441a00f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:31, skipping insertion in model container [2023-11-19 07:54:31,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:30" (2/3) ... [2023-11-19 07:54:31,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441a00f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:31, skipping insertion in model container [2023-11-19 07:54:31,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:31" (3/3) ... [2023-11-19 07:54:31,371 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2023-11-19 07:54:31,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:31,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:54:31,392 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:31,479 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:31,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:54:31,643 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:54:31,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:31,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:54:31,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:54:31,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 149 transitions, 310 flow [2023-11-19 07:54:31,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:31,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:54:31,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:54:31,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 149 transitions, 310 flow [2023-11-19 07:54:31,743 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:54:31,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:31,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:54:31,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 4380 [2023-11-19 07:54:37,441 INFO L134 LiptonReduction]: Checked pairs total: 10444 [2023-11-19 07:54:37,441 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-11-19 07:54:37,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:37,464 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;@203d98b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:37,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:54:37,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:37,466 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:54:37,466 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:37,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:37,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:54:37,468 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 07:54:37,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:37,473 INFO L85 PathProgramCache]: Analyzing trace with hash 660, now seen corresponding path program 1 times [2023-11-19 07:54:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204504956] [2023-11-19 07:54:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:37,594 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 07:54:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204504956] [2023-11-19 07:54:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204504956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:54:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800067040] [2023-11-19 07:54:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:37,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:37,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:37,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2023-11-19 07:54:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 07:54:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2023-11-19 07:54:37,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:40,183 INFO L124 PetriNetUnfolderBase]: 10487/14082 cut-off events. [2023-11-19 07:54:40,183 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-19 07:54:40,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28358 conditions, 14082 events. 10487/14082 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 72092 event pairs, 10487 based on Foata normal form. 0/12386 useless extension candidates. Maximal degree in co-relation 28346. Up to 14059 conditions per place. [2023-11-19 07:54:40,326 INFO L140 encePairwiseOnDemand]: 290/299 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:54:40,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 134 flow [2023-11-19 07:54:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-11-19 07:54:40,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183946488294314 [2023-11-19 07:54:40,349 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-11-19 07:54:40,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-11-19 07:54:40,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:40,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-11-19 07:54:40,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 07:54:40,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 07:54:40,370 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states 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 07:54:40,372 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 310 transitions. [2023-11-19 07:54:40,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 134 flow [2023-11-19 07:54:40,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:40,384 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:54:40,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, 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 07:54:40,392 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:54:40,393 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:54:40,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 07:54:40,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:40,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:54:40,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:40,394 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 07:54:40,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash 651575, now seen corresponding path program 1 times [2023-11-19 07:54:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:40,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832571073] [2023-11-19 07:54:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:40,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:40,764 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 07:54:40,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:40,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832571073] [2023-11-19 07:54:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832571073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:40,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117525428] [2023-11-19 07:54:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:40,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 299 [2023-11-19 07:54:40,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:40,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:40,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 299 [2023-11-19 07:54:40,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:42,863 INFO L124 PetriNetUnfolderBase]: 8247/11823 cut-off events. [2023-11-19 07:54:42,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:42,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23100 conditions, 11823 events. 8247/11823 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 71982 event pairs, 1527 based on Foata normal form. 0/11051 useless extension candidates. Maximal degree in co-relation 23097. Up to 8863 conditions per place. [2023-11-19 07:54:42,956 INFO L140 encePairwiseOnDemand]: 296/299 looper letters, 47 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-19 07:54:42,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 224 flow [2023-11-19 07:54:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-19 07:54:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094760312151616 [2023-11-19 07:54:42,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-19 07:54:42,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-19 07:54:42,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:42,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-19 07:54:42,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 07:54:42,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 07:54:42,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states 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 07:54:42,973 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 457 transitions. [2023-11-19 07:54:42,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 224 flow [2023-11-19 07:54:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:42,977 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:54:42,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, 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 07:54:42,979 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:54:42,980 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:54:42,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:42,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:42,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:42,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:42,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:42,992 INFO L85 PathProgramCache]: Analyzing trace with hash -134186218, now seen corresponding path program 1 times [2023-11-19 07:54:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:42,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848873548] [2023-11-19 07:54:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:44,021 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 07:54:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848873548] [2023-11-19 07:54:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848873548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:44,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:44,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:44,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858329517] [2023-11-19 07:54:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:44,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:54:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:44,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:54:44,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:44,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 299 [2023-11-19 07:54:44,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 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 07:54:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 299 [2023-11-19 07:54:44,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:45,947 INFO L124 PetriNetUnfolderBase]: 5879/7988 cut-off events. [2023-11-19 07:54:45,947 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2023-11-19 07:54:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16653 conditions, 7988 events. 5879/7988 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 39353 event pairs, 584 based on Foata normal form. 0/7988 useless extension candidates. Maximal degree in co-relation 16649. Up to 5184 conditions per place. [2023-11-19 07:54:46,001 INFO L140 encePairwiseOnDemand]: 293/299 looper letters, 52 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-19 07:54:46,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 254 flow [2023-11-19 07:54:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 878 transitions. [2023-11-19 07:54:46,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41949354992833254 [2023-11-19 07:54:46,006 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 878 transitions. [2023-11-19 07:54:46,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 878 transitions. [2023-11-19 07:54:46,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:46,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 878 transitions. [2023-11-19 07:54:46,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 07:54:46,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:54:46,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:54:46,017 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 7 states and 878 transitions. [2023-11-19 07:54:46,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 254 flow [2023-11-19 07:54:46,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:46,020 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 76 flow [2023-11-19 07:54:46,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-19 07:54:46,021 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-19 07:54:46,021 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 76 flow [2023-11-19 07:54:46,022 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 07:54:46,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:46,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:46,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:46,023 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 07:54:46,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -134186244, now seen corresponding path program 1 times [2023-11-19 07:54:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459445030] [2023-11-19 07:54:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:46,239 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 07:54:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459445030] [2023-11-19 07:54:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459445030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:46,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:46,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335344294] [2023-11-19 07:54:46,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:46,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:46,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 299 [2023-11-19 07:54:46,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 76 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 07:54:46,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:46,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 299 [2023-11-19 07:54:46,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:50,496 INFO L124 PetriNetUnfolderBase]: 23995/32506 cut-off events. [2023-11-19 07:54:50,496 INFO L125 PetriNetUnfolderBase]: For 1115/1115 co-relation queries the response was YES. [2023-11-19 07:54:50,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67098 conditions, 32506 events. 23995/32506 cut-off events. For 1115/1115 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 178141 event pairs, 7613 based on Foata normal form. 1344/33850 useless extension candidates. Maximal degree in co-relation 67094. Up to 16107 conditions per place. [2023-11-19 07:54:50,687 INFO L140 encePairwiseOnDemand]: 289/299 looper letters, 47 selfloop transitions, 8 changer transitions 35/90 dead transitions. [2023-11-19 07:54:50,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 90 transitions, 396 flow [2023-11-19 07:54:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2023-11-19 07:54:50,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4729096989966555 [2023-11-19 07:54:50,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2023-11-19 07:54:50,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2023-11-19 07:54:50,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:50,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2023-11-19 07:54:50,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 07:54:50,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:54:50,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:54:50,702 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 76 flow. Second operand 5 states and 707 transitions. [2023-11-19 07:54:50,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 90 transitions, 396 flow [2023-11-19 07:54:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 90 transitions, 378 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:50,747 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 148 flow [2023-11-19 07:54:50,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-11-19 07:54:50,750 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-19 07:54:50,750 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 148 flow [2023-11-19 07:54:50,751 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 07:54:50,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:50,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:50,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:50,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:50,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash 135152855, now seen corresponding path program 1 times [2023-11-19 07:54:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36603532] [2023-11-19 07:54:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:50,962 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 07:54:50,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36603532] [2023-11-19 07:54:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36603532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:50,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:50,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398590055] [2023-11-19 07:54:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:50,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:50,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 299 [2023-11-19 07:54:50,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 07:54:50,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:50,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 299 [2023-11-19 07:54:50,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:54,873 INFO L124 PetriNetUnfolderBase]: 20239/28115 cut-off events. [2023-11-19 07:54:54,873 INFO L125 PetriNetUnfolderBase]: For 18536/18628 co-relation queries the response was YES. [2023-11-19 07:54:54,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75118 conditions, 28115 events. 20239/28115 cut-off events. For 18536/18628 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 161380 event pairs, 5145 based on Foata normal form. 1240/29208 useless extension candidates. Maximal degree in co-relation 75111. Up to 22475 conditions per place. [2023-11-19 07:54:55,085 INFO L140 encePairwiseOnDemand]: 294/299 looper letters, 43 selfloop transitions, 5 changer transitions 33/85 dead transitions. [2023-11-19 07:54:55,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 502 flow [2023-11-19 07:54:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-11-19 07:54:55,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48294314381270903 [2023-11-19 07:54:55,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-11-19 07:54:55,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-11-19 07:54:55,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:55,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-11-19 07:54:55,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 07:54:55,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:54:55,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:54:55,102 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 148 flow. Second operand 5 states and 722 transitions. [2023-11-19 07:54:55,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 502 flow [2023-11-19 07:54:55,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:55,213 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 189 flow [2023-11-19 07:54:55,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-19 07:54:55,217 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-19 07:54:55,217 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 189 flow [2023-11-19 07:54:55,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states 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 07:54:55,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:55,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:55,219 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 07:54:55,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 135176880, now seen corresponding path program 1 times [2023-11-19 07:54:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485883623] [2023-11-19 07:54:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,503 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 07:54:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485883623] [2023-11-19 07:54:55,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485883623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413903259] [2023-11-19 07:54:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:55,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 299 [2023-11-19 07:54:55,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 07:54:55,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:55,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 299 [2023-11-19 07:54:55,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:59,531 INFO L124 PetriNetUnfolderBase]: 21388/29195 cut-off events. [2023-11-19 07:54:59,532 INFO L125 PetriNetUnfolderBase]: For 36514/36514 co-relation queries the response was YES. [2023-11-19 07:54:59,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83103 conditions, 29195 events. 21388/29195 cut-off events. For 36514/36514 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 160944 event pairs, 2409 based on Foata normal form. 1114/30309 useless extension candidates. Maximal degree in co-relation 83093. Up to 14405 conditions per place. [2023-11-19 07:54:59,747 INFO L140 encePairwiseOnDemand]: 289/299 looper letters, 65 selfloop transitions, 14 changer transitions 44/123 dead transitions. [2023-11-19 07:54:59,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 123 transitions, 725 flow [2023-11-19 07:54:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 979 transitions. [2023-11-19 07:54:59,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677496416626851 [2023-11-19 07:54:59,759 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 979 transitions. [2023-11-19 07:54:59,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 979 transitions. [2023-11-19 07:54:59,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:59,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 979 transitions. [2023-11-19 07:54:59,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states 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 07:54:59,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:54:59,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:54:59,775 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 189 flow. Second operand 7 states and 979 transitions. [2023-11-19 07:54:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 123 transitions, 725 flow [2023-11-19 07:55:00,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 123 transitions, 714 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:00,163 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 276 flow [2023-11-19 07:55:00,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-11-19 07:55:00,164 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-19 07:55:00,164 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 276 flow [2023-11-19 07:55:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 07:55:00,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:00,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:00,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:55:00,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:55:00,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -105245643, now seen corresponding path program 1 times [2023-11-19 07:55:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:00,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127673185] [2023-11-19 07:55:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:00,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:00,417 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 07:55:00,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127673185] [2023-11-19 07:55:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127673185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:00,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:00,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:00,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538990982] [2023-11-19 07:55:00,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:00,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:00,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 299 [2023-11-19 07:55:00,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 07:55:00,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:00,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 299 [2023-11-19 07:55:00,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:04,813 INFO L124 PetriNetUnfolderBase]: 19743/26979 cut-off events. [2023-11-19 07:55:04,813 INFO L125 PetriNetUnfolderBase]: For 67902/67902 co-relation queries the response was YES. [2023-11-19 07:55:04,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85397 conditions, 26979 events. 19743/26979 cut-off events. For 67902/67902 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 144992 event pairs, 4028 based on Foata normal form. 1097/28076 useless extension candidates. Maximal degree in co-relation 85383. Up to 10313 conditions per place. [2023-11-19 07:55:05,039 INFO L140 encePairwiseOnDemand]: 290/299 looper letters, 70 selfloop transitions, 9 changer transitions 49/128 dead transitions. [2023-11-19 07:55:05,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 128 transitions, 904 flow [2023-11-19 07:55:05,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:55:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 969 transitions. [2023-11-19 07:55:05,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46297181079789773 [2023-11-19 07:55:05,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 969 transitions. [2023-11-19 07:55:05,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 969 transitions. [2023-11-19 07:55:05,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:05,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 969 transitions. [2023-11-19 07:55:05,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.42857142857142) internal successors, (969), 7 states have internal predecessors, (969), 0 states have call successors, (0), 0 states 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 07:55:05,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:55:05,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:55:05,075 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 276 flow. Second operand 7 states and 969 transitions. [2023-11-19 07:55:05,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 128 transitions, 904 flow [2023-11-19 07:55:05,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 128 transitions, 874 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-19 07:55:05,897 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 362 flow [2023-11-19 07:55:05,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2023-11-19 07:55:05,898 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-19 07:55:05,898 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 362 flow [2023-11-19 07:55:05,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 07:55:05,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:05,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:05,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:55:05,900 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 07:55:05,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1244855128, now seen corresponding path program 1 times [2023-11-19 07:55:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058454270] [2023-11-19 07:55:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:06,116 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 07:55:06,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058454270] [2023-11-19 07:55:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058454270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:06,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:06,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:06,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912207864] [2023-11-19 07:55:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:06,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:06,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:06,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:06,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-19 07:55:06,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 07:55:06,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:06,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-19 07:55:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:08,361 INFO L124 PetriNetUnfolderBase]: 10913/15983 cut-off events. [2023-11-19 07:55:08,361 INFO L125 PetriNetUnfolderBase]: For 34010/34774 co-relation queries the response was YES. [2023-11-19 07:55:08,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50128 conditions, 15983 events. 10913/15983 cut-off events. For 34010/34774 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 97171 event pairs, 1824 based on Foata normal form. 1522/17454 useless extension candidates. Maximal degree in co-relation 50110. Up to 10253 conditions per place. [2023-11-19 07:55:08,665 INFO L140 encePairwiseOnDemand]: 292/299 looper letters, 101 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-11-19 07:55:08,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 1012 flow [2023-11-19 07:55:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:55:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-11-19 07:55:08,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48294314381270903 [2023-11-19 07:55:08,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-11-19 07:55:08,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-11-19 07:55:08,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:08,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-11-19 07:55:08,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 07:55:08,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:55:08,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 07:55:08,677 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 362 flow. Second operand 5 states and 722 transitions. [2023-11-19 07:55:08,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 1012 flow [2023-11-19 07:55:08,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 126 transitions, 993 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:55:08,894 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 424 flow [2023-11-19 07:55:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-19 07:55:08,895 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-19 07:55:08,895 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 424 flow [2023-11-19 07:55:08,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 07:55:08,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:08,896 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 07:55:08,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:55:08,896 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 07:55:08,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1989805086, now seen corresponding path program 1 times [2023-11-19 07:55:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530398181] [2023-11-19 07:55:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:09,100 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 07:55:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530398181] [2023-11-19 07:55:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530398181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:09,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470317175] [2023-11-19 07:55:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 299 [2023-11-19 07:55:09,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 07:55:09,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 299 [2023-11-19 07:55:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:55:13,909 INFO L124 PetriNetUnfolderBase]: 20553/29352 cut-off events. [2023-11-19 07:55:13,909 INFO L125 PetriNetUnfolderBase]: For 77528/77528 co-relation queries the response was YES. [2023-11-19 07:55:14,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114098 conditions, 29352 events. 20553/29352 cut-off events. For 77528/77528 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 180019 event pairs, 3968 based on Foata normal form. 540/29892 useless extension candidates. Maximal degree in co-relation 114078. Up to 12281 conditions per place. [2023-11-19 07:55:14,070 INFO L140 encePairwiseOnDemand]: 289/299 looper letters, 84 selfloop transitions, 20 changer transitions 61/165 dead transitions. [2023-11-19 07:55:14,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 165 transitions, 1338 flow [2023-11-19 07:55:14,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:55:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 977 transitions. [2023-11-19 07:55:14,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667940754897277 [2023-11-19 07:55:14,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 977 transitions. [2023-11-19 07:55:14,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 977 transitions. [2023-11-19 07:55:14,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:55:14,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 977 transitions. [2023-11-19 07:55:14,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states 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 07:55:14,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:55:14,086 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 07:55:14,087 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 424 flow. Second operand 7 states and 977 transitions. [2023-11-19 07:55:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 165 transitions, 1338 flow [2023-11-19 07:55:14,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 165 transitions, 1315 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:55:14,903 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 529 flow [2023-11-19 07:55:14,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2023-11-19 07:55:14,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-11-19 07:55:14,904 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 529 flow [2023-11-19 07:55:14,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 07:55:14,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:55:14,905 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 07:55:14,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:55:14,906 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 07:55:14,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2057217526, now seen corresponding path program 1 times [2023-11-19 07:55:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351353986] [2023-11-19 07:55:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:14,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:15,112 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 07:55:15,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351353986] [2023-11-19 07:55:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351353986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245958274] [2023-11-19 07:55:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-19 07:55:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 07:55:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:55:15,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-19 07:55:15,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand