./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/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_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/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_b613093f-d500-4ad1-a1c7-98cd00fb2611/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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:00,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:00,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:40:00,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:00,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:00,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:00,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:00,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:00,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:00,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:00,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:00,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:00,698 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:00,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:00,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:00,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:00,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:00,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:00,702 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:40:00,703 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:40:00,703 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:40:00,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:00,704 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:40:00,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:00,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:00,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:00,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:00,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:00,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:00,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:00,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:00,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:00,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:00,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:00,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:00,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:00,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:00,711 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:00,711 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_b613093f-d500-4ad1-a1c7-98cd00fb2611/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-19 07:40:01,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:01,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:01,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:01,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:01,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:01,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-19 07:40:04,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:04,540 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:04,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-19 07:40:04,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/data/b3c88be76/acdf2535e36549e3ad850961f2a2f9bb/FLAGc381d9d4f [2023-11-19 07:40:04,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/data/b3c88be76/acdf2535e36549e3ad850961f2a2f9bb [2023-11-19 07:40:04,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:04,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:04,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:04,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:04,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:04,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:04" (1/1) ... [2023-11-19 07:40:04,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742607a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:04, skipping insertion in model container [2023-11-19 07:40:04,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:04" (1/1) ... [2023-11-19 07:40:04,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:04,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:04,935 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:04,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:05,021 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:05,021 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:05,030 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:05,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05 WrapperNode [2023-11-19 07:40:05,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:05,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:05,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:05,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:05,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,084 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 211 [2023-11-19 07:40:05,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:05,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:05,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:05,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:05,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,113 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:05,122 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:05,122 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:05,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:05,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (1/1) ... [2023-11-19 07:40:05,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:05,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:05,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:05,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b613093f-d500-4ad1-a1c7-98cd00fb2611/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:05,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:40:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:40:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:40:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:40:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:40:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:40:05,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:40:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:40:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:40:05,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:40:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:05,218 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 07:40:05,335 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:05,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:05,830 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:05,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:05,929 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:40:05,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:05 BoogieIcfgContainer [2023-11-19 07:40:05,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:05,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:05,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:05,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:05,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:04" (1/3) ... [2023-11-19 07:40:05,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd74a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:05, skipping insertion in model container [2023-11-19 07:40:05,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:05" (2/3) ... [2023-11-19 07:40:05,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd74a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:05, skipping insertion in model container [2023-11-19 07:40:05,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:05" (3/3) ... [2023-11-19 07:40:05,943 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-19 07:40:05,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:05,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 07:40:05,965 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:06,047 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:40:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 173 transitions, 374 flow [2023-11-19 07:40:06,168 INFO L124 PetriNetUnfolderBase]: 2/169 cut-off events. [2023-11-19 07:40:06,168 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:40:06,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 169 events. 2/169 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-19 07:40:06,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 173 transitions, 374 flow [2023-11-19 07:40:06,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 164 transitions, 352 flow [2023-11-19 07:40:06,184 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:06,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 164 transitions, 352 flow [2023-11-19 07:40:06,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 164 transitions, 352 flow [2023-11-19 07:40:06,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 164 transitions, 352 flow [2023-11-19 07:40:06,242 INFO L124 PetriNetUnfolderBase]: 2/164 cut-off events. [2023-11-19 07:40:06,243 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:40:06,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 164 events. 2/164 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-19 07:40:06,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 2060 [2023-11-19 07:40:13,339 INFO L134 LiptonReduction]: Checked pairs total: 10193 [2023-11-19 07:40:13,339 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-19 07:40:13,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:13,362 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;@77552e4f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:13,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:40:13,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:13,364 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:40:13,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:13,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:13,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:40:13,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:13,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 680, now seen corresponding path program 1 times [2023-11-19 07:40:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406166336] [2023-11-19 07:40:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:13,488 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 07:40:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:13,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406166336] [2023-11-19 07:40:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406166336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:13,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:40:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435531679] [2023-11-19 07:40:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:13,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:13,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:13,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 323 [2023-11-19 07:40:13,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 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 07:40:13,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:13,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 323 [2023-11-19 07:40:13,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:14,406 INFO L124 PetriNetUnfolderBase]: 4185/6246 cut-off events. [2023-11-19 07:40:14,407 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-19 07:40:14,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 6246 events. 4185/6246 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35746 event pairs, 4185 based on Foata normal form. 0/5321 useless extension candidates. Maximal degree in co-relation 10250. Up to 5885 conditions per place. [2023-11-19 07:40:14,472 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-19 07:40:14,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-11-19 07:40:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:40:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-11-19 07:40:14,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356037151702786 [2023-11-19 07:40:14,503 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-11-19 07:40:14,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-11-19 07:40:14,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:14,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-11-19 07:40:14,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 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 07:40:14,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 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 07:40:14,526 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 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 07:40:14,528 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 346 transitions. [2023-11-19 07:40:14,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-11-19 07:40:14,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-19 07:40:14,552 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-11-19 07:40:14,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-19 07:40:14,558 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-19 07:40:14,558 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-11-19 07:40:14,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 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 07:40:14,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:14,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:14,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:14,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:14,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 670289, now seen corresponding path program 1 times [2023-11-19 07:40:14,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:14,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959343661] [2023-11-19 07:40:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:14,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:15,002 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 07:40:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959343661] [2023-11-19 07:40:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959343661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:15,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:15,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126281690] [2023-11-19 07:40:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:15,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 07:40:15,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:15,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:15,765 INFO L124 PetriNetUnfolderBase]: 4038/6029 cut-off events. [2023-11-19 07:40:15,765 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:15,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11786 conditions, 6029 events. 4038/6029 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 34402 event pairs, 4038 based on Foata normal form. 0/5172 useless extension candidates. Maximal degree in co-relation 11783. Up to 5669 conditions per place. [2023-11-19 07:40:15,812 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-19 07:40:15,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-11-19 07:40:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-19 07:40:15,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-19 07:40:15,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-19 07:40:15,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-19 07:40:15,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:15,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-19 07:40:15,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 07:40:15,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:15,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:15,831 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 475 transitions. [2023-11-19 07:40:15,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-11-19 07:40:15,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:15,834 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-11-19 07:40:15,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-19 07:40:15,836 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-19 07:40:15,837 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-11-19 07:40:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 07:40:15,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:15,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:15,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:15,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash 670288, now seen corresponding path program 1 times [2023-11-19 07:40:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772100300] [2023-11-19 07:40:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:16,109 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 07:40:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772100300] [2023-11-19 07:40:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772100300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:16,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259501923] [2023-11-19 07:40:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:16,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-19 07:40:16,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 07:40:16,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:16,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-19 07:40:16,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:16,796 INFO L124 PetriNetUnfolderBase]: 3891/5812 cut-off events. [2023-11-19 07:40:16,796 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:16,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11356 conditions, 5812 events. 3891/5812 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 33026 event pairs, 3891 based on Foata normal form. 0/5023 useless extension candidates. Maximal degree in co-relation 11352. Up to 5454 conditions per place. [2023-11-19 07:40:16,923 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-19 07:40:16,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-11-19 07:40:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-11-19 07:40:16,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695562435500516 [2023-11-19 07:40:16,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-11-19 07:40:16,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-11-19 07:40:16,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:16,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-11-19 07:40:16,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 07:40:16,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:16,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:16,936 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 455 transitions. [2023-11-19 07:40:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-11-19 07:40:16,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:16,939 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-11-19 07:40:16,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-19 07:40:16,940 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-11-19 07:40:16,941 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-11-19 07:40:16,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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 07:40:16,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:16,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:16,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 644161763, now seen corresponding path program 1 times [2023-11-19 07:40:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385883144] [2023-11-19 07:40:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:17,095 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 07:40:17,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:17,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385883144] [2023-11-19 07:40:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385883144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146969607] [2023-11-19 07:40:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:17,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-19 07:40:17,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 07:40:17,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:17,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-19 07:40:17,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:17,755 INFO L124 PetriNetUnfolderBase]: 3843/5728 cut-off events. [2023-11-19 07:40:17,755 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:17,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11193 conditions, 5728 events. 3843/5728 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32537 event pairs, 3843 based on Foata normal form. 0/4973 useless extension candidates. Maximal degree in co-relation 11189. Up to 5374 conditions per place. [2023-11-19 07:40:17,833 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-19 07:40:17,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-11-19 07:40:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-11-19 07:40:17,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674922600619195 [2023-11-19 07:40:17,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-11-19 07:40:17,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-11-19 07:40:17,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:17,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-11-19 07:40:17,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 07:40:17,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:17,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:17,843 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 453 transitions. [2023-11-19 07:40:17,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-11-19 07:40:17,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:17,846 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-11-19 07:40:17,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-19 07:40:17,847 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-11-19 07:40:17,847 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-11-19 07:40:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 07:40:17,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:17,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:40:17,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:17,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:17,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash 644161762, now seen corresponding path program 1 times [2023-11-19 07:40:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:17,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080832398] [2023-11-19 07:40:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:17,950 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 07:40:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080832398] [2023-11-19 07:40:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080832398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:17,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:17,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704147805] [2023-11-19 07:40:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:17,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:18,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:18,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 07:40:18,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:18,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:18,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:18,607 INFO L124 PetriNetUnfolderBase]: 3795/5644 cut-off events. [2023-11-19 07:40:18,607 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:18,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 5644 events. 3795/5644 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32082 event pairs, 3795 based on Foata normal form. 0/4923 useless extension candidates. Maximal degree in co-relation 11026. Up to 5294 conditions per place. [2023-11-19 07:40:18,653 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-19 07:40:18,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-11-19 07:40:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-11-19 07:40:18,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840041279669763 [2023-11-19 07:40:18,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-11-19 07:40:18,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-11-19 07:40:18,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:18,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-11-19 07:40:18,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 07:40:18,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:18,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:18,665 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 469 transitions. [2023-11-19 07:40:18,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-11-19 07:40:18,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:18,668 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-11-19 07:40:18,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-19 07:40:18,671 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-11-19 07:40:18,671 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-11-19 07:40:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 07:40:18,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:18,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:18,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:18,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 564180482, now seen corresponding path program 1 times [2023-11-19 07:40:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:18,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424771851] [2023-11-19 07:40:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:18,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:18,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424771851] [2023-11-19 07:40:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424771851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:18,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:18,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366172315] [2023-11-19 07:40:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:18,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:18,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:18,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 07:40:18,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:18,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:18,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:19,525 INFO L124 PetriNetUnfolderBase]: 3648/5413 cut-off events. [2023-11-19 07:40:19,526 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:19,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 5413 events. 3648/5413 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 30491 event pairs, 3648 based on Foata normal form. 0/4760 useless extension candidates. Maximal degree in co-relation 10581. Up to 5079 conditions per place. [2023-11-19 07:40:19,562 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-19 07:40:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-11-19 07:40:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-19 07:40:19,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48194014447884415 [2023-11-19 07:40:19,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-19 07:40:19,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-19 07:40:19,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:19,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-19 07:40:19,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 07:40:19,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:19,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:19,573 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 467 transitions. [2023-11-19 07:40:19,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-11-19 07:40:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:19,577 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-11-19 07:40:19,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-11-19 07:40:19,580 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-11-19 07:40:19,584 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-11-19 07:40:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 07:40:19,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:19,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:19,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:19,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 564180481, now seen corresponding path program 1 times [2023-11-19 07:40:19,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:19,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791712623] [2023-11-19 07:40:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:19,714 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 07:40:19,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:19,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791712623] [2023-11-19 07:40:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791712623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:19,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:19,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:19,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403669172] [2023-11-19 07:40:19,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:19,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:19,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:19,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:19,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-19 07:40:19,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 07:40:19,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:19,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-19 07:40:19,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:20,368 INFO L124 PetriNetUnfolderBase]: 3501/5182 cut-off events. [2023-11-19 07:40:20,369 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:20,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 5182 events. 3501/5182 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28894 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10136. Up to 4864 conditions per place. [2023-11-19 07:40:20,400 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-19 07:40:20,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-11-19 07:40:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-19 07:40:20,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613003095975232 [2023-11-19 07:40:20,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-19 07:40:20,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-19 07:40:20,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:20,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-19 07:40:20,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 07:40:20,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:20,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:20,410 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 447 transitions. [2023-11-19 07:40:20,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-11-19 07:40:20,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:20,412 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-11-19 07:40:20,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-11-19 07:40:20,413 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-19 07:40:20,413 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-11-19 07:40:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 07:40:20,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:20,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:20,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:20,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:20,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1011580845, now seen corresponding path program 1 times [2023-11-19 07:40:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968535303] [2023-11-19 07:40:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:20,481 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 07:40:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968535303] [2023-11-19 07:40:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968535303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:20,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139928484] [2023-11-19 07:40:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:20,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:20,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:20,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 323 [2023-11-19 07:40:20,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 07:40:20,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:20,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 323 [2023-11-19 07:40:20,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:20,943 INFO L124 PetriNetUnfolderBase]: 2733/4094 cut-off events. [2023-11-19 07:40:20,943 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:20,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8029 conditions, 4094 events. 2733/4094 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 22152 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8025. Up to 3840 conditions per place. [2023-11-19 07:40:20,968 INFO L140 encePairwiseOnDemand]: 321/323 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-19 07:40:20,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-11-19 07:40:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-11-19 07:40:20,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46233230134158926 [2023-11-19 07:40:20,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-11-19 07:40:20,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-11-19 07:40:20,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:20,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-11-19 07:40:20,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 07:40:20,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:20,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:20,977 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 448 transitions. [2023-11-19 07:40:20,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-11-19 07:40:20,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:20,980 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-11-19 07:40:20,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-19 07:40:20,982 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-19 07:40:20,982 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-11-19 07:40:20,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 07:40:20,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:20,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:20,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:20,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:20,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1011580843, now seen corresponding path program 1 times [2023-11-19 07:40:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863111191] [2023-11-19 07:40:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:21,179 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 07:40:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863111191] [2023-11-19 07:40:21,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863111191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:21,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:21,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016682472] [2023-11-19 07:40:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:21,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:21,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 323 [2023-11-19 07:40:21,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 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 07:40:21,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:21,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 323 [2023-11-19 07:40:21,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:21,588 INFO L124 PetriNetUnfolderBase]: 1965/3006 cut-off events. [2023-11-19 07:40:21,588 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:40:21,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 3006 events. 1965/3006 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15732 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5914. Up to 2816 conditions per place. [2023-11-19 07:40:21,605 INFO L140 encePairwiseOnDemand]: 321/323 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-19 07:40:21,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-11-19 07:40:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-11-19 07:40:21,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-11-19 07:40:21,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-11-19 07:40:21,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-11-19 07:40:21,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:21,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-11-19 07:40:21,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 07:40:21,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:21,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 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 07:40:21,615 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 408 transitions. [2023-11-19 07:40:21,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-11-19 07:40:21,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:21,616 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-11-19 07:40:21,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-19 07:40:21,617 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-19 07:40:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-11-19 07:40:21,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 states have internal predecessors, (765), 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 07:40:21,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:21,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:21,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:21,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1994537594, now seen corresponding path program 1 times [2023-11-19 07:40:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068289265] [2023-11-19 07:40:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:22,202 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 07:40:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068289265] [2023-11-19 07:40:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068289265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477941337] [2023-11-19 07:40:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:22,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 323 [2023-11-19 07:40:22,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 07:40:22,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:22,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 323 [2023-11-19 07:40:22,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:23,511 INFO L124 PetriNetUnfolderBase]: 7775/10913 cut-off events. [2023-11-19 07:40:23,511 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-19 07:40:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22079 conditions, 10913 events. 7775/10913 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 53609 event pairs, 2164 based on Foata normal form. 1/10914 useless extension candidates. Maximal degree in co-relation 22075. Up to 5195 conditions per place. [2023-11-19 07:40:23,576 INFO L140 encePairwiseOnDemand]: 316/323 looper letters, 89 selfloop transitions, 12 changer transitions 13/114 dead transitions. [2023-11-19 07:40:23,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 487 flow [2023-11-19 07:40:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 961 transitions. [2023-11-19 07:40:23,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49587203302373584 [2023-11-19 07:40:23,582 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 961 transitions. [2023-11-19 07:40:23,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 961 transitions. [2023-11-19 07:40:23,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:23,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 961 transitions. [2023-11-19 07:40:23,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 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 07:40:23,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:23,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:23,593 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 6 states and 961 transitions. [2023-11-19 07:40:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 487 flow [2023-11-19 07:40:23,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:23,597 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 164 flow [2023-11-19 07:40:23,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-19 07:40:23,598 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2023-11-19 07:40:23,598 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 164 flow [2023-11-19 07:40:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 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 07:40:23,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:23,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:23,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:23,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:23,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2027045682, now seen corresponding path program 2 times [2023-11-19 07:40:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:23,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352927572] [2023-11-19 07:40:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:23,780 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 07:40:23,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352927572] [2023-11-19 07:40:23,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352927572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:23,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:23,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:23,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008835538] [2023-11-19 07:40:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:23,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:23,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:23,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:23,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:23,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:23,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:23,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:24,798 INFO L124 PetriNetUnfolderBase]: 4089/6875 cut-off events. [2023-11-19 07:40:24,798 INFO L125 PetriNetUnfolderBase]: For 500/516 co-relation queries the response was YES. [2023-11-19 07:40:24,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14332 conditions, 6875 events. 4089/6875 cut-off events. For 500/516 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 46965 event pairs, 677 based on Foata normal form. 16/6697 useless extension candidates. Maximal degree in co-relation 14325. Up to 1759 conditions per place. [2023-11-19 07:40:24,849 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 79 selfloop transitions, 29 changer transitions 0/126 dead transitions. [2023-11-19 07:40:24,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 552 flow [2023-11-19 07:40:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1117 transitions. [2023-11-19 07:40:24,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940291906236179 [2023-11-19 07:40:24,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1117 transitions. [2023-11-19 07:40:24,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1117 transitions. [2023-11-19 07:40:24,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:24,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1117 transitions. [2023-11-19 07:40:24,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.57142857142858) internal successors, (1117), 7 states have internal predecessors, (1117), 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 07:40:24,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:24,865 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:24,865 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 164 flow. Second operand 7 states and 1117 transitions. [2023-11-19 07:40:24,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 552 flow [2023-11-19 07:40:24,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 546 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:24,894 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 306 flow [2023-11-19 07:40:24,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2023-11-19 07:40:24,894 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-19 07:40:24,895 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 306 flow [2023-11-19 07:40:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:24,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:24,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:24,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:40:24,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:24,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1046960268, now seen corresponding path program 3 times [2023-11-19 07:40:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619241506] [2023-11-19 07:40:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:25,018 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 07:40:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619241506] [2023-11-19 07:40:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619241506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:25,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947007343] [2023-11-19 07:40:25,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:25,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:25,810 INFO L124 PetriNetUnfolderBase]: 4140/6935 cut-off events. [2023-11-19 07:40:25,810 INFO L125 PetriNetUnfolderBase]: For 2417/2677 co-relation queries the response was YES. [2023-11-19 07:40:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17703 conditions, 6935 events. 4140/6935 cut-off events. For 2417/2677 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 46437 event pairs, 820 based on Foata normal form. 166/6937 useless extension candidates. Maximal degree in co-relation 17695. Up to 4869 conditions per place. [2023-11-19 07:40:25,879 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 83 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2023-11-19 07:40:25,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 128 transitions, 693 flow [2023-11-19 07:40:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-11-19 07:40:25,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792569659442725 [2023-11-19 07:40:25,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-11-19 07:40:25,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-11-19 07:40:25,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:25,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-11-19 07:40:25,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 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 07:40:25,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:25,891 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:25,891 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 306 flow. Second operand 5 states and 788 transitions. [2023-11-19 07:40:25,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 128 transitions, 693 flow [2023-11-19 07:40:25,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 128 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:25,923 INFO L231 Difference]: Finished difference. Result has 68 places, 96 transitions, 489 flow [2023-11-19 07:40:25,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=489, PETRI_PLACES=68, PETRI_TRANSITIONS=96} [2023-11-19 07:40:25,924 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-11-19 07:40:25,924 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 96 transitions, 489 flow [2023-11-19 07:40:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:25,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:25,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:40:25,925 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1330019752, now seen corresponding path program 4 times [2023-11-19 07:40:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310150436] [2023-11-19 07:40:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:26,063 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 07:40:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310150436] [2023-11-19 07:40:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310150436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587511074] [2023-11-19 07:40:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:26,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:26,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 96 transitions, 489 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:26,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:27,111 INFO L124 PetriNetUnfolderBase]: 5459/9274 cut-off events. [2023-11-19 07:40:27,111 INFO L125 PetriNetUnfolderBase]: For 8166/8806 co-relation queries the response was YES. [2023-11-19 07:40:27,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27065 conditions, 9274 events. 5459/9274 cut-off events. For 8166/8806 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 66956 event pairs, 933 based on Foata normal form. 312/9346 useless extension candidates. Maximal degree in co-relation 27054. Up to 3172 conditions per place. [2023-11-19 07:40:27,188 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 93 selfloop transitions, 61 changer transitions 0/172 dead transitions. [2023-11-19 07:40:27,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 172 transitions, 1101 flow [2023-11-19 07:40:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 963 transitions. [2023-11-19 07:40:27,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969040247678019 [2023-11-19 07:40:27,193 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 963 transitions. [2023-11-19 07:40:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 963 transitions. [2023-11-19 07:40:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 963 transitions. [2023-11-19 07:40:27,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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 07:40:27,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:27,202 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:27,203 INFO L175 Difference]: Start difference. First operand has 68 places, 96 transitions, 489 flow. Second operand 6 states and 963 transitions. [2023-11-19 07:40:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 172 transitions, 1101 flow [2023-11-19 07:40:27,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 172 transitions, 1081 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:27,253 INFO L231 Difference]: Finished difference. Result has 73 places, 126 transitions, 875 flow [2023-11-19 07:40:27,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=875, PETRI_PLACES=73, PETRI_TRANSITIONS=126} [2023-11-19 07:40:27,254 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-11-19 07:40:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 126 transitions, 875 flow [2023-11-19 07:40:27,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:27,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:27,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:27,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:40:27,256 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:27,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1399453510, now seen corresponding path program 5 times [2023-11-19 07:40:27,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:27,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533850053] [2023-11-19 07:40:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:27,397 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 07:40:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533850053] [2023-11-19 07:40:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533850053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105149923] [2023-11-19 07:40:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:27,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:27,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:27,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 126 transitions, 875 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:27,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:27,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:28,414 INFO L124 PetriNetUnfolderBase]: 5136/8788 cut-off events. [2023-11-19 07:40:28,414 INFO L125 PetriNetUnfolderBase]: For 16038/16946 co-relation queries the response was YES. [2023-11-19 07:40:28,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29639 conditions, 8788 events. 5136/8788 cut-off events. For 16038/16946 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 62272 event pairs, 1245 based on Foata normal form. 388/9026 useless extension candidates. Maximal degree in co-relation 29626. Up to 6414 conditions per place. [2023-11-19 07:40:28,505 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 108 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2023-11-19 07:40:28,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 169 transitions, 1399 flow [2023-11-19 07:40:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-11-19 07:40:28,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891640866873065 [2023-11-19 07:40:28,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-11-19 07:40:28,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-11-19 07:40:28,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:28,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-11-19 07:40:28,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 07:40:28,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:28,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:28,518 INFO L175 Difference]: Start difference. First operand has 73 places, 126 transitions, 875 flow. Second operand 5 states and 790 transitions. [2023-11-19 07:40:28,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 169 transitions, 1399 flow [2023-11-19 07:40:28,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 169 transitions, 1390 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:28,569 INFO L231 Difference]: Finished difference. Result has 78 places, 137 transitions, 1107 flow [2023-11-19 07:40:28,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1107, PETRI_PLACES=78, PETRI_TRANSITIONS=137} [2023-11-19 07:40:28,570 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2023-11-19 07:40:28,571 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 137 transitions, 1107 flow [2023-11-19 07:40:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:28,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:28,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:40:28,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:28,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:28,572 INFO L85 PathProgramCache]: Analyzing trace with hash 509966426, now seen corresponding path program 6 times [2023-11-19 07:40:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:28,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923129817] [2023-11-19 07:40:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:28,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:28,706 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 07:40:28,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:28,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923129817] [2023-11-19 07:40:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923129817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:28,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423878584] [2023-11-19 07:40:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:28,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:28,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:28,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 137 transitions, 1107 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:28,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:28,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:29,737 INFO L124 PetriNetUnfolderBase]: 4753/8139 cut-off events. [2023-11-19 07:40:29,737 INFO L125 PetriNetUnfolderBase]: For 16726/17798 co-relation queries the response was YES. [2023-11-19 07:40:29,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28330 conditions, 8139 events. 4753/8139 cut-off events. For 16726/17798 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56948 event pairs, 1453 based on Foata normal form. 358/8319 useless extension candidates. Maximal degree in co-relation 28314. Up to 6085 conditions per place. [2023-11-19 07:40:29,797 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 106 selfloop transitions, 48 changer transitions 5/177 dead transitions. [2023-11-19 07:40:29,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 177 transitions, 1646 flow [2023-11-19 07:40:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-11-19 07:40:29,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904024767801858 [2023-11-19 07:40:29,801 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-11-19 07:40:29,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-11-19 07:40:29,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:29,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-11-19 07:40:29,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 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 07:40:29,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:29,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:29,810 INFO L175 Difference]: Start difference. First operand has 78 places, 137 transitions, 1107 flow. Second operand 5 states and 792 transitions. [2023-11-19 07:40:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 177 transitions, 1646 flow [2023-11-19 07:40:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 177 transitions, 1599 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:29,845 INFO L231 Difference]: Finished difference. Result has 82 places, 144 transitions, 1295 flow [2023-11-19 07:40:29,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1295, PETRI_PLACES=82, PETRI_TRANSITIONS=144} [2023-11-19 07:40:29,846 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2023-11-19 07:40:29,846 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 144 transitions, 1295 flow [2023-11-19 07:40:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:29,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:29,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:29,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:40:29,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash -148006768, now seen corresponding path program 7 times [2023-11-19 07:40:29,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:29,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039853007] [2023-11-19 07:40:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:29,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:29,982 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 07:40:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039853007] [2023-11-19 07:40:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039853007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:29,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103286278] [2023-11-19 07:40:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:29,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:30,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 144 transitions, 1295 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:30,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:30,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:30,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:30,644 INFO L124 PetriNetUnfolderBase]: 3039/5546 cut-off events. [2023-11-19 07:40:30,644 INFO L125 PetriNetUnfolderBase]: For 11268/11986 co-relation queries the response was YES. [2023-11-19 07:40:30,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19175 conditions, 5546 events. 3039/5546 cut-off events. For 11268/11986 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 38263 event pairs, 928 based on Foata normal form. 234/5642 useless extension candidates. Maximal degree in co-relation 19157. Up to 4154 conditions per place. [2023-11-19 07:40:30,692 INFO L140 encePairwiseOnDemand]: 314/323 looper letters, 104 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2023-11-19 07:40:30,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 158 transitions, 1547 flow [2023-11-19 07:40:30,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:40:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-11-19 07:40:30,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873065015479876 [2023-11-19 07:40:30,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-11-19 07:40:30,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-11-19 07:40:30,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:30,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-11-19 07:40:30,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 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 07:40:30,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:30,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 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 07:40:30,705 INFO L175 Difference]: Start difference. First operand has 82 places, 144 transitions, 1295 flow. Second operand 5 states and 787 transitions. [2023-11-19 07:40:30,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 158 transitions, 1547 flow [2023-11-19 07:40:30,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 158 transitions, 1507 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:30,744 INFO L231 Difference]: Finished difference. Result has 84 places, 134 transitions, 1254 flow [2023-11-19 07:40:30,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1254, PETRI_PLACES=84, PETRI_TRANSITIONS=134} [2023-11-19 07:40:30,745 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2023-11-19 07:40:30,745 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 134 transitions, 1254 flow [2023-11-19 07:40:30,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 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 07:40:30,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:30,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:30,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:40:30,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:30,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1196523852, now seen corresponding path program 8 times [2023-11-19 07:40:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194934124] [2023-11-19 07:40:30,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:30,888 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 07:40:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:30,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194934124] [2023-11-19 07:40:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194934124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:30,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462562047] [2023-11-19 07:40:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:30,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:30,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:30,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:30,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:30,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 134 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:30,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:30,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:30,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:31,813 INFO L124 PetriNetUnfolderBase]: 3035/5560 cut-off events. [2023-11-19 07:40:31,814 INFO L125 PetriNetUnfolderBase]: For 12229/13283 co-relation queries the response was YES. [2023-11-19 07:40:31,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19716 conditions, 5560 events. 3035/5560 cut-off events. For 12229/13283 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 38868 event pairs, 498 based on Foata normal form. 580/5962 useless extension candidates. Maximal degree in co-relation 19697. Up to 2476 conditions per place. [2023-11-19 07:40:31,855 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 98 selfloop transitions, 77 changer transitions 1/190 dead transitions. [2023-11-19 07:40:31,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 1866 flow [2023-11-19 07:40:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 960 transitions. [2023-11-19 07:40:31,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953560371517028 [2023-11-19 07:40:31,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 960 transitions. [2023-11-19 07:40:31,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 960 transitions. [2023-11-19 07:40:31,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:31,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 960 transitions. [2023-11-19 07:40:31,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 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 07:40:31,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:31,871 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:31,872 INFO L175 Difference]: Start difference. First operand has 84 places, 134 transitions, 1254 flow. Second operand 6 states and 960 transitions. [2023-11-19 07:40:31,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 1866 flow [2023-11-19 07:40:31,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 190 transitions, 1828 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:31,912 INFO L231 Difference]: Finished difference. Result has 88 places, 140 transitions, 1451 flow [2023-11-19 07:40:31,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1451, PETRI_PLACES=88, PETRI_TRANSITIONS=140} [2023-11-19 07:40:31,913 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2023-11-19 07:40:31,913 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 140 transitions, 1451 flow [2023-11-19 07:40:31,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:31,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:31,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:40:31,915 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:31,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1524647142, now seen corresponding path program 9 times [2023-11-19 07:40:31,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:31,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433437302] [2023-11-19 07:40:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,092 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 07:40:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433437302] [2023-11-19 07:40:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433437302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483674403] [2023-11-19 07:40:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:32,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:32,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 140 transitions, 1451 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:32,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:32,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:32,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:33,088 INFO L124 PetriNetUnfolderBase]: 3007/5598 cut-off events. [2023-11-19 07:40:33,088 INFO L125 PetriNetUnfolderBase]: For 16754/17870 co-relation queries the response was YES. [2023-11-19 07:40:33,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21133 conditions, 5598 events. 3007/5598 cut-off events. For 16754/17870 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 39803 event pairs, 467 based on Foata normal form. 662/6062 useless extension candidates. Maximal degree in co-relation 21113. Up to 2475 conditions per place. [2023-11-19 07:40:33,141 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 100 selfloop transitions, 82 changer transitions 2/198 dead transitions. [2023-11-19 07:40:33,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 198 transitions, 2102 flow [2023-11-19 07:40:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 962 transitions. [2023-11-19 07:40:33,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49638802889576883 [2023-11-19 07:40:33,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 962 transitions. [2023-11-19 07:40:33,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 962 transitions. [2023-11-19 07:40:33,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:33,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 962 transitions. [2023-11-19 07:40:33,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 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 07:40:33,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:33,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:33,156 INFO L175 Difference]: Start difference. First operand has 88 places, 140 transitions, 1451 flow. Second operand 6 states and 962 transitions. [2023-11-19 07:40:33,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 198 transitions, 2102 flow [2023-11-19 07:40:33,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 198 transitions, 1979 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 07:40:33,204 INFO L231 Difference]: Finished difference. Result has 90 places, 145 transitions, 1582 flow [2023-11-19 07:40:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1582, PETRI_PLACES=90, PETRI_TRANSITIONS=145} [2023-11-19 07:40:33,205 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-11-19 07:40:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 145 transitions, 1582 flow [2023-11-19 07:40:33,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:33,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:33,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:33,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:40:33,207 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:33,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 279306082, now seen corresponding path program 10 times [2023-11-19 07:40:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:33,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515475147] [2023-11-19 07:40:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:33,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:33,395 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 07:40:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:33,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515475147] [2023-11-19 07:40:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515475147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:33,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513255258] [2023-11-19 07:40:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:33,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:33,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 145 transitions, 1582 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:33,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:33,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:33,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:34,455 INFO L124 PetriNetUnfolderBase]: 3048/5751 cut-off events. [2023-11-19 07:40:34,455 INFO L125 PetriNetUnfolderBase]: For 20168/21212 co-relation queries the response was YES. [2023-11-19 07:40:34,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21963 conditions, 5751 events. 3048/5751 cut-off events. For 20168/21212 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42094 event pairs, 505 based on Foata normal form. 650/6213 useless extension candidates. Maximal degree in co-relation 21943. Up to 2477 conditions per place. [2023-11-19 07:40:34,517 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 117 selfloop transitions, 89 changer transitions 4/224 dead transitions. [2023-11-19 07:40:34,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 224 transitions, 2380 flow [2023-11-19 07:40:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1279 transitions. [2023-11-19 07:40:34,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494969040247678 [2023-11-19 07:40:34,523 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1279 transitions. [2023-11-19 07:40:34,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1279 transitions. [2023-11-19 07:40:34,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:34,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1279 transitions. [2023-11-19 07:40:34,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.875) internal successors, (1279), 8 states have internal predecessors, (1279), 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 07:40:34,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:34,532 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:34,533 INFO L175 Difference]: Start difference. First operand has 90 places, 145 transitions, 1582 flow. Second operand 8 states and 1279 transitions. [2023-11-19 07:40:34,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 224 transitions, 2380 flow [2023-11-19 07:40:34,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 224 transitions, 2230 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:34,585 INFO L231 Difference]: Finished difference. Result has 94 places, 152 transitions, 1731 flow [2023-11-19 07:40:34,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1731, PETRI_PLACES=94, PETRI_TRANSITIONS=152} [2023-11-19 07:40:34,587 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-19 07:40:34,587 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 152 transitions, 1731 flow [2023-11-19 07:40:34,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:34,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:34,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:40:34,588 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:34,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1257880424, now seen corresponding path program 11 times [2023-11-19 07:40:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577162391] [2023-11-19 07:40:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,729 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 07:40:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577162391] [2023-11-19 07:40:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577162391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:34,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521372841] [2023-11-19 07:40:34,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:34,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:34,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 152 transitions, 1731 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:34,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:34,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:34,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,726 INFO L124 PetriNetUnfolderBase]: 3016/5725 cut-off events. [2023-11-19 07:40:35,726 INFO L125 PetriNetUnfolderBase]: For 22116/23236 co-relation queries the response was YES. [2023-11-19 07:40:35,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22293 conditions, 5725 events. 3016/5725 cut-off events. For 22116/23236 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 42022 event pairs, 546 based on Foata normal form. 614/6155 useless extension candidates. Maximal degree in co-relation 22273. Up to 2455 conditions per place. [2023-11-19 07:40:35,758 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 110 selfloop transitions, 102 changer transitions 7/233 dead transitions. [2023-11-19 07:40:35,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 233 transitions, 2704 flow [2023-11-19 07:40:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1273 transitions. [2023-11-19 07:40:35,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2023-11-19 07:40:35,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1273 transitions. [2023-11-19 07:40:35,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1273 transitions. [2023-11-19 07:40:35,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1273 transitions. [2023-11-19 07:40:35,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.125) internal successors, (1273), 8 states have internal predecessors, (1273), 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 07:40:35,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:35,773 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:35,773 INFO L175 Difference]: Start difference. First operand has 94 places, 152 transitions, 1731 flow. Second operand 8 states and 1273 transitions. [2023-11-19 07:40:35,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 233 transitions, 2704 flow [2023-11-19 07:40:35,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 233 transitions, 2480 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:35,824 INFO L231 Difference]: Finished difference. Result has 98 places, 165 transitions, 1941 flow [2023-11-19 07:40:35,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1941, PETRI_PLACES=98, PETRI_TRANSITIONS=165} [2023-11-19 07:40:35,825 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2023-11-19 07:40:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 165 transitions, 1941 flow [2023-11-19 07:40:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:35,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:40:35,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -640957598, now seen corresponding path program 12 times [2023-11-19 07:40:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52716498] [2023-11-19 07:40:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,974 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 07:40:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52716498] [2023-11-19 07:40:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52716498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392201839] [2023-11-19 07:40:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:35,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:36,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:36,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 165 transitions, 1941 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:36,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:36,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:36,843 INFO L124 PetriNetUnfolderBase]: 2983/5710 cut-off events. [2023-11-19 07:40:36,843 INFO L125 PetriNetUnfolderBase]: For 23376/24342 co-relation queries the response was YES. [2023-11-19 07:40:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22615 conditions, 5710 events. 2983/5710 cut-off events. For 23376/24342 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42247 event pairs, 508 based on Foata normal form. 456/5962 useless extension candidates. Maximal degree in co-relation 22593. Up to 1577 conditions per place. [2023-11-19 07:40:36,880 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 84 selfloop transitions, 128 changer transitions 2/228 dead transitions. [2023-11-19 07:40:36,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 228 transitions, 2651 flow [2023-11-19 07:40:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1273 transitions. [2023-11-19 07:40:36,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2023-11-19 07:40:36,886 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1273 transitions. [2023-11-19 07:40:36,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1273 transitions. [2023-11-19 07:40:36,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:36,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1273 transitions. [2023-11-19 07:40:36,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.125) internal successors, (1273), 8 states have internal predecessors, (1273), 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 07:40:36,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:36,895 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:36,895 INFO L175 Difference]: Start difference. First operand has 98 places, 165 transitions, 1941 flow. Second operand 8 states and 1273 transitions. [2023-11-19 07:40:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 228 transitions, 2651 flow [2023-11-19 07:40:36,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 228 transitions, 2623 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:36,965 INFO L231 Difference]: Finished difference. Result has 104 places, 173 transitions, 2255 flow [2023-11-19 07:40:36,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2255, PETRI_PLACES=104, PETRI_TRANSITIONS=173} [2023-11-19 07:40:36,966 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 40 predicate places. [2023-11-19 07:40:36,966 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 173 transitions, 2255 flow [2023-11-19 07:40:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:36,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:36,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:36,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:40:36,967 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:36,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash -577422942, now seen corresponding path program 13 times [2023-11-19 07:40:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950804429] [2023-11-19 07:40:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:37,109 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 07:40:37,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:37,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950804429] [2023-11-19 07:40:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950804429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259225015] [2023-11-19 07:40:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:37,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:37,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:37,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 173 transitions, 2255 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:37,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:37,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:37,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:38,084 INFO L124 PetriNetUnfolderBase]: 3212/6196 cut-off events. [2023-11-19 07:40:38,085 INFO L125 PetriNetUnfolderBase]: For 30119/31233 co-relation queries the response was YES. [2023-11-19 07:40:38,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25483 conditions, 6196 events. 3212/6196 cut-off events. For 30119/31233 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47121 event pairs, 215 based on Foata normal form. 516/6522 useless extension candidates. Maximal degree in co-relation 25460. Up to 1904 conditions per place. [2023-11-19 07:40:38,136 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 103 selfloop transitions, 141 changer transitions 4/262 dead transitions. [2023-11-19 07:40:38,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 262 transitions, 3093 flow [2023-11-19 07:40:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1127 transitions. [2023-11-19 07:40:38,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984520123839009 [2023-11-19 07:40:38,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1127 transitions. [2023-11-19 07:40:38,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1127 transitions. [2023-11-19 07:40:38,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:38,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1127 transitions. [2023-11-19 07:40:38,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 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 07:40:38,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:38,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:38,153 INFO L175 Difference]: Start difference. First operand has 104 places, 173 transitions, 2255 flow. Second operand 7 states and 1127 transitions. [2023-11-19 07:40:38,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 262 transitions, 3093 flow [2023-11-19 07:40:38,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 262 transitions, 2840 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:38,229 INFO L231 Difference]: Finished difference. Result has 108 places, 197 transitions, 2611 flow [2023-11-19 07:40:38,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2611, PETRI_PLACES=108, PETRI_TRANSITIONS=197} [2023-11-19 07:40:38,230 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2023-11-19 07:40:38,230 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 197 transitions, 2611 flow [2023-11-19 07:40:38,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:38,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:38,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:40:38,232 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:38,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash -497016862, now seen corresponding path program 14 times [2023-11-19 07:40:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:38,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503077121] [2023-11-19 07:40:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:38,375 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 07:40:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503077121] [2023-11-19 07:40:38,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503077121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:38,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:38,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68302199] [2023-11-19 07:40:38,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:38,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:38,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:38,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:38,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:38,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:38,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 197 transitions, 2611 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:38,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:38,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:38,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:39,403 INFO L124 PetriNetUnfolderBase]: 2554/5033 cut-off events. [2023-11-19 07:40:39,403 INFO L125 PetriNetUnfolderBase]: For 29776/30696 co-relation queries the response was YES. [2023-11-19 07:40:39,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22846 conditions, 5033 events. 2554/5033 cut-off events. For 29776/30696 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 37045 event pairs, 416 based on Foata normal form. 538/5487 useless extension candidates. Maximal degree in co-relation 22820. Up to 2447 conditions per place. [2023-11-19 07:40:39,447 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 132 selfloop transitions, 115 changer transitions 22/283 dead transitions. [2023-11-19 07:40:39,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 283 transitions, 3970 flow [2023-11-19 07:40:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1270 transitions. [2023-11-19 07:40:39,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914860681114551 [2023-11-19 07:40:39,452 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1270 transitions. [2023-11-19 07:40:39,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1270 transitions. [2023-11-19 07:40:39,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:39,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1270 transitions. [2023-11-19 07:40:39,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.75) internal successors, (1270), 8 states have internal predecessors, (1270), 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 07:40:39,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:39,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 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 07:40:39,460 INFO L175 Difference]: Start difference. First operand has 108 places, 197 transitions, 2611 flow. Second operand 8 states and 1270 transitions. [2023-11-19 07:40:39,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 283 transitions, 3970 flow [2023-11-19 07:40:39,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 283 transitions, 3890 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:39,550 INFO L231 Difference]: Finished difference. Result has 116 places, 207 transitions, 3061 flow [2023-11-19 07:40:39,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3061, PETRI_PLACES=116, PETRI_TRANSITIONS=207} [2023-11-19 07:40:39,551 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 52 predicate places. [2023-11-19 07:40:39,551 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 207 transitions, 3061 flow [2023-11-19 07:40:39,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:39,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:39,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:39,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:40:39,552 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:39,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:39,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1497317580, now seen corresponding path program 15 times [2023-11-19 07:40:39,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:39,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138377293] [2023-11-19 07:40:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:39,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:39,694 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 07:40:39,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:39,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138377293] [2023-11-19 07:40:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138377293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:39,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382216096] [2023-11-19 07:40:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:39,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:39,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:39,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 207 transitions, 3061 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:39,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:39,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:40,671 INFO L124 PetriNetUnfolderBase]: 2323/4648 cut-off events. [2023-11-19 07:40:40,671 INFO L125 PetriNetUnfolderBase]: For 32661/33624 co-relation queries the response was YES. [2023-11-19 07:40:40,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22423 conditions, 4648 events. 2323/4648 cut-off events. For 32661/33624 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34541 event pairs, 163 based on Foata normal form. 450/5023 useless extension candidates. Maximal degree in co-relation 22394. Up to 1378 conditions per place. [2023-11-19 07:40:40,709 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 98 selfloop transitions, 159 changer transitions 8/279 dead transitions. [2023-11-19 07:40:40,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 279 transitions, 4007 flow [2023-11-19 07:40:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2023-11-19 07:40:40,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966828836797877 [2023-11-19 07:40:40,711 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2023-11-19 07:40:40,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2023-11-19 07:40:40,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:40,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2023-11-19 07:40:40,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 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 07:40:40,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:40,716 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:40,716 INFO L175 Difference]: Start difference. First operand has 116 places, 207 transitions, 3061 flow. Second operand 7 states and 1123 transitions. [2023-11-19 07:40:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 279 transitions, 4007 flow [2023-11-19 07:40:40,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 279 transitions, 3941 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:40,812 INFO L231 Difference]: Finished difference. Result has 120 places, 213 transitions, 3413 flow [2023-11-19 07:40:40,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3413, PETRI_PLACES=120, PETRI_TRANSITIONS=213} [2023-11-19 07:40:40,812 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 56 predicate places. [2023-11-19 07:40:40,813 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 213 transitions, 3413 flow [2023-11-19 07:40:40,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:40,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:40,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:40,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 07:40:40,814 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:40,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:40,814 INFO L85 PathProgramCache]: Analyzing trace with hash 610912884, now seen corresponding path program 16 times [2023-11-19 07:40:40,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:40,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952788291] [2023-11-19 07:40:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:40,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:40,965 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 07:40:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:40,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952788291] [2023-11-19 07:40:40,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952788291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:40,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:40,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655265026] [2023-11-19 07:40:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:40,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 213 transitions, 3413 flow. Second operand has 8 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 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 07:40:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:40,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:41,961 INFO L124 PetriNetUnfolderBase]: 2256/4559 cut-off events. [2023-11-19 07:40:41,961 INFO L125 PetriNetUnfolderBase]: For 38008/38760 co-relation queries the response was YES. [2023-11-19 07:40:41,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23257 conditions, 4559 events. 2256/4559 cut-off events. For 38008/38760 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33789 event pairs, 364 based on Foata normal form. 200/4686 useless extension candidates. Maximal degree in co-relation 23228. Up to 1744 conditions per place. [2023-11-19 07:40:42,011 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 114 selfloop transitions, 138 changer transitions 9/275 dead transitions. [2023-11-19 07:40:42,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 275 transitions, 4317 flow [2023-11-19 07:40:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:40:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:40:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1423 transitions. [2023-11-19 07:40:42,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895080839353285 [2023-11-19 07:40:42,015 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1423 transitions. [2023-11-19 07:40:42,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1423 transitions. [2023-11-19 07:40:42,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:42,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1423 transitions. [2023-11-19 07:40:42,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.11111111111111) internal successors, (1423), 9 states have internal predecessors, (1423), 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 07:40:42,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 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 07:40:42,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 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 07:40:42,024 INFO L175 Difference]: Start difference. First operand has 120 places, 213 transitions, 3413 flow. Second operand 9 states and 1423 transitions. [2023-11-19 07:40:42,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 275 transitions, 4317 flow [2023-11-19 07:40:42,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 275 transitions, 4059 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:42,116 INFO L231 Difference]: Finished difference. Result has 124 places, 211 transitions, 3431 flow [2023-11-19 07:40:42,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3431, PETRI_PLACES=124, PETRI_TRANSITIONS=211} [2023-11-19 07:40:42,117 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 60 predicate places. [2023-11-19 07:40:42,117 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 211 transitions, 3431 flow [2023-11-19 07:40:42,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 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 07:40:42,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:42,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 07:40:42,118 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:42,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash 466414502, now seen corresponding path program 17 times [2023-11-19 07:40:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632881611] [2023-11-19 07:40:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:42,297 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 07:40:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632881611] [2023-11-19 07:40:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632881611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:40:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099904627] [2023-11-19 07:40:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:40:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:42,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:40:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:40:42,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 211 transitions, 3431 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:42,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:43,439 INFO L124 PetriNetUnfolderBase]: 2236/4551 cut-off events. [2023-11-19 07:40:43,439 INFO L125 PetriNetUnfolderBase]: For 38273/39025 co-relation queries the response was YES. [2023-11-19 07:40:43,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22889 conditions, 4551 events. 2236/4551 cut-off events. For 38273/39025 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34008 event pairs, 366 based on Foata normal form. 200/4678 useless extension candidates. Maximal degree in co-relation 22860. Up to 1742 conditions per place. [2023-11-19 07:40:43,467 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 122 selfloop transitions, 140 changer transitions 10/286 dead transitions. [2023-11-19 07:40:43,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 286 transitions, 4408 flow [2023-11-19 07:40:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:40:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:40:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1873 transitions. [2023-11-19 07:40:43,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48323013415892674 [2023-11-19 07:40:43,470 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1873 transitions. [2023-11-19 07:40:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1873 transitions. [2023-11-19 07:40:43,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:43,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1873 transitions. [2023-11-19 07:40:43,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.08333333333334) internal successors, (1873), 12 states have internal predecessors, (1873), 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 07:40:43,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:43,481 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:43,481 INFO L175 Difference]: Start difference. First operand has 124 places, 211 transitions, 3431 flow. Second operand 12 states and 1873 transitions. [2023-11-19 07:40:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 286 transitions, 4408 flow [2023-11-19 07:40:43,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 286 transitions, 4266 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-19 07:40:43,611 INFO L231 Difference]: Finished difference. Result has 131 places, 213 transitions, 3580 flow [2023-11-19 07:40:43,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3580, PETRI_PLACES=131, PETRI_TRANSITIONS=213} [2023-11-19 07:40:43,612 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 67 predicate places. [2023-11-19 07:40:43,613 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 213 transitions, 3580 flow [2023-11-19 07:40:43,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:43,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:43,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:43,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 07:40:43,614 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1642603494, now seen corresponding path program 18 times [2023-11-19 07:40:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734700841] [2023-11-19 07:40:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:43,776 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 07:40:43,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:43,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734700841] [2023-11-19 07:40:43,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734700841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:43,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:43,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:40:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363954920] [2023-11-19 07:40:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:40:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:40:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:40:43,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:43,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 213 transitions, 3580 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:43,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:43,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:43,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:44,834 INFO L124 PetriNetUnfolderBase]: 2306/4720 cut-off events. [2023-11-19 07:40:44,834 INFO L125 PetriNetUnfolderBase]: For 44062/44836 co-relation queries the response was YES. [2023-11-19 07:40:44,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24080 conditions, 4720 events. 2306/4720 cut-off events. For 44062/44836 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35871 event pairs, 376 based on Foata normal form. 256/4901 useless extension candidates. Maximal degree in co-relation 24052. Up to 1741 conditions per place. [2023-11-19 07:40:44,872 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 109 selfloop transitions, 117 changer transitions 67/307 dead transitions. [2023-11-19 07:40:44,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 307 transitions, 4991 flow [2023-11-19 07:40:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:40:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:40:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1876 transitions. [2023-11-19 07:40:44,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840041279669763 [2023-11-19 07:40:44,875 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1876 transitions. [2023-11-19 07:40:44,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1876 transitions. [2023-11-19 07:40:44,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:44,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1876 transitions. [2023-11-19 07:40:44,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.33333333333334) internal successors, (1876), 12 states have internal predecessors, (1876), 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 07:40:44,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:44,884 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:44,885 INFO L175 Difference]: Start difference. First operand has 131 places, 213 transitions, 3580 flow. Second operand 12 states and 1876 transitions. [2023-11-19 07:40:44,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 307 transitions, 4991 flow [2023-11-19 07:40:44,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 307 transitions, 4656 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-19 07:40:45,003 INFO L231 Difference]: Finished difference. Result has 135 places, 190 transitions, 3044 flow [2023-11-19 07:40:45,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3044, PETRI_PLACES=135, PETRI_TRANSITIONS=190} [2023-11-19 07:40:45,004 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 71 predicate places. [2023-11-19 07:40:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 190 transitions, 3044 flow [2023-11-19 07:40:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:45,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 07:40:45,005 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash -872820880, now seen corresponding path program 19 times [2023-11-19 07:40:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902265446] [2023-11-19 07:40:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:45,160 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 07:40:45,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902265446] [2023-11-19 07:40:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902265446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:45,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:45,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:40:45,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073699279] [2023-11-19 07:40:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:40:45,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:40:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:40:45,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:45,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 190 transitions, 3044 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:45,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:46,265 INFO L124 PetriNetUnfolderBase]: 2050/4224 cut-off events. [2023-11-19 07:40:46,265 INFO L125 PetriNetUnfolderBase]: For 40512/41250 co-relation queries the response was YES. [2023-11-19 07:40:46,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21578 conditions, 4224 events. 2050/4224 cut-off events. For 40512/41250 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 31570 event pairs, 368 based on Foata normal form. 226/4383 useless extension candidates. Maximal degree in co-relation 21548. Up to 1729 conditions per place. [2023-11-19 07:40:46,302 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 118 selfloop transitions, 119 changer transitions 23/274 dead transitions. [2023-11-19 07:40:46,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 274 transitions, 4146 flow [2023-11-19 07:40:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:40:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:40:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1876 transitions. [2023-11-19 07:40:46,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840041279669763 [2023-11-19 07:40:46,307 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1876 transitions. [2023-11-19 07:40:46,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1876 transitions. [2023-11-19 07:40:46,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:46,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1876 transitions. [2023-11-19 07:40:46,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.33333333333334) internal successors, (1876), 12 states have internal predecessors, (1876), 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 07:40:46,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:46,315 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 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 07:40:46,315 INFO L175 Difference]: Start difference. First operand has 135 places, 190 transitions, 3044 flow. Second operand 12 states and 1876 transitions. [2023-11-19 07:40:46,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 274 transitions, 4146 flow [2023-11-19 07:40:46,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 274 transitions, 3962 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-11-19 07:40:46,417 INFO L231 Difference]: Finished difference. Result has 139 places, 191 transitions, 3106 flow [2023-11-19 07:40:46,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3106, PETRI_PLACES=139, PETRI_TRANSITIONS=191} [2023-11-19 07:40:46,418 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-11-19 07:40:46,418 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 191 transitions, 3106 flow [2023-11-19 07:40:46,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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 07:40:46,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:46,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:46,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-19 07:40:46,419 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1581131056, now seen corresponding path program 20 times [2023-11-19 07:40:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:46,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036021927] [2023-11-19 07:40:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:46,562 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 07:40:46,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:46,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036021927] [2023-11-19 07:40:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036021927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:46,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360206272] [2023-11-19 07:40:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:46,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:46,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:46,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 191 transitions, 3106 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:46,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:46,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:46,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:47,342 INFO L124 PetriNetUnfolderBase]: 1904/4096 cut-off events. [2023-11-19 07:40:47,342 INFO L125 PetriNetUnfolderBase]: For 44719/45244 co-relation queries the response was YES. [2023-11-19 07:40:47,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20991 conditions, 4096 events. 1904/4096 cut-off events. For 44719/45244 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 31388 event pairs, 336 based on Foata normal form. 178/4221 useless extension candidates. Maximal degree in co-relation 20961. Up to 1171 conditions per place. [2023-11-19 07:40:47,373 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 114 selfloop transitions, 121 changer transitions 10/258 dead transitions. [2023-11-19 07:40:47,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 258 transitions, 4021 flow [2023-11-19 07:40:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 954 transitions. [2023-11-19 07:40:47,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49226006191950467 [2023-11-19 07:40:47,375 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 954 transitions. [2023-11-19 07:40:47,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 954 transitions. [2023-11-19 07:40:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 954 transitions. [2023-11-19 07:40:47,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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 07:40:47,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:47,380 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 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 07:40:47,381 INFO L175 Difference]: Start difference. First operand has 139 places, 191 transitions, 3106 flow. Second operand 6 states and 954 transitions. [2023-11-19 07:40:47,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 258 transitions, 4021 flow [2023-11-19 07:40:47,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 258 transitions, 4001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:47,535 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 3739 flow [2023-11-19 07:40:47,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3739, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2023-11-19 07:40:47,537 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 81 predicate places. [2023-11-19 07:40:47,537 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 3739 flow [2023-11-19 07:40:47,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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 07:40:47,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:47,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:47,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-19 07:40:47,539 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:47,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1831399442, now seen corresponding path program 21 times [2023-11-19 07:40:47,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:47,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743926478] [2023-11-19 07:40:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:47,718 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 07:40:47,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:47,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743926478] [2023-11-19 07:40:47,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743926478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:47,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:47,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:47,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938120117] [2023-11-19 07:40:47,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:47,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:47,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:47,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:47,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:47,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:47,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 3739 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:47,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:47,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:47,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:48,831 INFO L124 PetriNetUnfolderBase]: 1815/3869 cut-off events. [2023-11-19 07:40:48,831 INFO L125 PetriNetUnfolderBase]: For 52664/53690 co-relation queries the response was YES. [2023-11-19 07:40:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22216 conditions, 3869 events. 1815/3869 cut-off events. For 52664/53690 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 29117 event pairs, 142 based on Foata normal form. 310/4125 useless extension candidates. Maximal degree in co-relation 22183. Up to 1152 conditions per place. [2023-11-19 07:40:48,865 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 90 selfloop transitions, 155 changer transitions 12/270 dead transitions. [2023-11-19 07:40:48,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 270 transitions, 4538 flow [2023-11-19 07:40:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:40:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1122 transitions. [2023-11-19 07:40:48,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2023-11-19 07:40:48,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1122 transitions. [2023-11-19 07:40:48,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1122 transitions. [2023-11-19 07:40:48,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:48,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1122 transitions. [2023-11-19 07:40:48,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.28571428571428) internal successors, (1122), 7 states have internal predecessors, (1122), 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 07:40:48,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:48,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 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 07:40:48,873 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 3739 flow. Second operand 7 states and 1122 transitions. [2023-11-19 07:40:48,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 270 transitions, 4538 flow [2023-11-19 07:40:48,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 270 transitions, 4491 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:48,988 INFO L231 Difference]: Finished difference. Result has 150 places, 207 transitions, 3933 flow [2023-11-19 07:40:48,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3933, PETRI_PLACES=150, PETRI_TRANSITIONS=207} [2023-11-19 07:40:48,989 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 86 predicate places. [2023-11-19 07:40:48,989 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 207 transitions, 3933 flow [2023-11-19 07:40:48,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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 07:40:48,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:48,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-19 07:40:48,991 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-19 07:40:48,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash -445764512, now seen corresponding path program 22 times [2023-11-19 07:40:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790136102] [2023-11-19 07:40:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,162 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 07:40:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790136102] [2023-11-19 07:40:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790136102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952245372] [2023-11-19 07:40:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:49,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:49,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-19 07:40:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 207 transitions, 3933 flow. Second operand has 8 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 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 07:40:49,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:49,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-19 07:40:49,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand