./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix043.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix043.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl --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 8b566ddb7b309d9ba7ea7e298fcc3be9218751e5387d333007519a12118bc5db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:16,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:16,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:18:16,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:16,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:16,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:16,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:16,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:16,959 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:16,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:16,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:16,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:16,968 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:16,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:16,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:16,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:16,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:16,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:16,973 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:18:16,973 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:18:16,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:18:16,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:16,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:18:16,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:16,976 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:16,976 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:16,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:16,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:16,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:16,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:16,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:16,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:16,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:16,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:16,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:16,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:16,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:16,983 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:16,983 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_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b566ddb7b309d9ba7ea7e298fcc3be9218751e5387d333007519a12118bc5db [2023-11-12 02:18:17,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:17,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:17,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:17,419 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:17,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:17,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix043.opt.i [2023-11-12 02:18:20,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:21,046 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:21,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/sv-benchmarks/c/pthread-wmm/mix043.opt.i [2023-11-12 02:18:21,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/data/27f5197d9/d980fcfdcccc4bdb9c9806abe45d22b9/FLAG91625feb7 [2023-11-12 02:18:21,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/data/27f5197d9/d980fcfdcccc4bdb9c9806abe45d22b9 [2023-11-12 02:18:21,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:21,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:21,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:21,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:21,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:21,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:21,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3189b2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21, skipping insertion in model container [2023-11-12 02:18:21,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:21,196 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:21,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:21,661 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:21,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:21,841 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:21,841 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:21,850 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:21,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21 WrapperNode [2023-11-12 02:18:21,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:21,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:21,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:21,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:21,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:21,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:21,968 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 174 [2023-11-12 02:18:21,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:21,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:21,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:21,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:21,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:21,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:22,058 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:22,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:22,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:22,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (1/1) ... [2023-11-12 02:18:22,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:22,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:22,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ef33da-5e47-460c-a08e-92ba91c8ff1e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:18:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:18:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:18:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:18:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:18:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:18:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:18:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:18:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:22,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:22,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:22,251 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:18:22,431 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:22,433 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:22,932 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:23,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:23,102 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:23,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:23 BoogieIcfgContainer [2023-11-12 02:18:23,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:23,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:23,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:23,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:23,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:21" (1/3) ... [2023-11-12 02:18:23,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb1e66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:23, skipping insertion in model container [2023-11-12 02:18:23,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:21" (2/3) ... [2023-11-12 02:18:23,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb1e66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:23, skipping insertion in model container [2023-11-12 02:18:23,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:23" (3/3) ... [2023-11-12 02:18:23,118 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.opt.i [2023-11-12 02:18:23,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:23,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 02:18:23,139 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:23,228 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:18:23,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 151 transitions, 318 flow [2023-11-12 02:18:23,416 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-12 02:18:23,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:23,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-12 02:18:23,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 151 transitions, 318 flow [2023-11-12 02:18:23,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:23,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:23,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:23,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:23,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 147 transitions, 306 flow [2023-11-12 02:18:23,493 INFO L124 PetriNetUnfolderBase]: 3/147 cut-off events. [2023-11-12 02:18:23,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 3/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-12 02:18:23,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 3780 [2023-11-12 02:18:29,991 INFO L134 LiptonReduction]: Checked pairs total: 9175 [2023-11-12 02:18:29,992 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-11-12 02:18:30,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:30,015 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;@7d9d166f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:30,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-12 02:18:30,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:30,018 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:18:30,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:30,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:30,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:18:30,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:30,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash 642, now seen corresponding path program 1 times [2023-11-12 02:18:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853094737] [2023-11-12 02:18:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853094737] [2023-11-12 02:18:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853094737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:30,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:30,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:18:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997614399] [2023-11-12 02:18:30,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:30,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:30,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299 [2023-11-12 02:18:30,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:30,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299 [2023-11-12 02:18:30,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:31,523 INFO L124 PetriNetUnfolderBase]: 5003/6953 cut-off events. [2023-11-12 02:18:31,523 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-12 02:18:31,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13885 conditions, 6953 events. 5003/6953 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36446 event pairs, 5003 based on Foata normal form. 216/6184 useless extension candidates. Maximal degree in co-relation 13873. Up to 6829 conditions per place. [2023-11-12 02:18:31,588 INFO L140 encePairwiseOnDemand]: 290/299 looper letters, 27 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-11-12 02:18:31,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 128 flow [2023-11-12 02:18:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-11-12 02:18:31,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183946488294314 [2023-11-12 02:18:31,611 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-11-12 02:18:31,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-11-12 02:18:31,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:31,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-11-12 02:18:31,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,634 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,636 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 92 flow. Second operand 2 states and 310 transitions. [2023-11-12 02:18:31,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 128 flow [2023-11-12 02:18:31,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:31,645 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 70 flow [2023-11-12 02:18:31,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-12 02:18:31,651 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -11 predicate places. [2023-11-12 02:18:31,651 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 70 flow [2023-11-12 02:18:31,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:31,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:31,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:31,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:31,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1759073057, now seen corresponding path program 1 times [2023-11-12 02:18:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:31,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096295975] [2023-11-12 02:18:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:31,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:32,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096295975] [2023-11-12 02:18:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096295975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:32,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:32,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388202586] [2023-11-12 02:18:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:32,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:32,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:32,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:32,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:32,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 299 [2023-11-12 02:18:32,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 70 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) [2023-11-12 02:18:32,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:32,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 299 [2023-11-12 02:18:32,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:33,138 INFO L124 PetriNetUnfolderBase]: 4151/5993 cut-off events. [2023-11-12 02:18:33,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:33,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11782 conditions, 5993 events. 4151/5993 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 33804 event pairs, 743 based on Foata normal form. 0/5440 useless extension candidates. Maximal degree in co-relation 11779. Up to 4561 conditions per place. [2023-11-12 02:18:33,190 INFO L140 encePairwiseOnDemand]: 296/299 looper letters, 34 selfloop transitions, 2 changer transitions 4/44 dead transitions. [2023-11-12 02:18:33,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 176 flow [2023-11-12 02:18:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-12 02:18:33,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005574136008919 [2023-11-12 02:18:33,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-12 02:18:33,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-12 02:18:33,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:33,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-12 02:18:33,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,203 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 70 flow. Second operand 3 states and 449 transitions. [2023-11-12 02:18:33,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 176 flow [2023-11-12 02:18:33,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:33,205 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 68 flow [2023-11-12 02:18:33,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-11-12 02:18:33,207 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2023-11-12 02:18:33,207 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 68 flow [2023-11-12 02:18:33,207 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) [2023-11-12 02:18:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:33,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:33,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:33,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1652727777, now seen corresponding path program 1 times [2023-11-12 02:18:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:33,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775696922] [2023-11-12 02:18:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775696922] [2023-11-12 02:18:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775696922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:34,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:34,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691049028] [2023-11-12 02:18:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:34,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:34,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:34,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 299 [2023-11-12 02:18:34,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 68 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:34,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 299 [2023-11-12 02:18:34,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:35,611 INFO L124 PetriNetUnfolderBase]: 2594/3781 cut-off events. [2023-11-12 02:18:35,611 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-12 02:18:35,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 3781 events. 2594/3781 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19573 event pairs, 156 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 7651. Up to 2097 conditions per place. [2023-11-12 02:18:35,649 INFO L140 encePairwiseOnDemand]: 293/299 looper letters, 42 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2023-11-12 02:18:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 208 flow [2023-11-12 02:18:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 875 transitions. [2023-11-12 02:18:35,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180602006688963 [2023-11-12 02:18:35,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 875 transitions. [2023-11-12 02:18:35,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 875 transitions. [2023-11-12 02:18:35,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:35,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 875 transitions. [2023-11-12 02:18:35,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,668 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 68 flow. Second operand 7 states and 875 transitions. [2023-11-12 02:18:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 208 flow [2023-11-12 02:18:35,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:35,675 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 72 flow [2023-11-12 02:18:35,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-11-12 02:18:35,676 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2023-11-12 02:18:35,677 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 72 flow [2023-11-12 02:18:35,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:35,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:35,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:35,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:35,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1652727757, now seen corresponding path program 1 times [2023-11-12 02:18:35,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:35,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341215839] [2023-11-12 02:18:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:35,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341215839] [2023-11-12 02:18:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341215839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:36,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:36,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:36,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291412239] [2023-11-12 02:18:36,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:36,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:36,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 299 [2023-11-12 02:18:36,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:36,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:36,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 299 [2023-11-12 02:18:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:38,115 INFO L124 PetriNetUnfolderBase]: 8919/12144 cut-off events. [2023-11-12 02:18:38,115 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2023-11-12 02:18:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25255 conditions, 12144 events. 8919/12144 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 56907 event pairs, 1531 based on Foata normal form. 532/12676 useless extension candidates. Maximal degree in co-relation 25251. Up to 9169 conditions per place. [2023-11-12 02:18:38,191 INFO L140 encePairwiseOnDemand]: 290/299 looper letters, 47 selfloop transitions, 8 changer transitions 37/92 dead transitions. [2023-11-12 02:18:38,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 92 transitions, 400 flow [2023-11-12 02:18:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 970 transitions. [2023-11-12 02:18:38,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634495938843765 [2023-11-12 02:18:38,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 970 transitions. [2023-11-12 02:18:38,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 970 transitions. [2023-11-12 02:18:38,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:38,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 970 transitions. [2023-11-12 02:18:38,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.57142857142858) internal successors, (970), 7 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,210 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 72 flow. Second operand 7 states and 970 transitions. [2023-11-12 02:18:38,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 92 transitions, 400 flow [2023-11-12 02:18:38,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 384 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:38,219 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 136 flow [2023-11-12 02:18:38,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-12 02:18:38,221 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-11-12 02:18:38,221 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 136 flow [2023-11-12 02:18:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:38,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:38,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash -868312815, now seen corresponding path program 1 times [2023-11-12 02:18:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034355058] [2023-11-12 02:18:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:39,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:39,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034355058] [2023-11-12 02:18:39,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034355058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:39,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:39,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:39,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96604095] [2023-11-12 02:18:39,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:39,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 299 [2023-11-12 02:18:39,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:39,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:39,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 299 [2023-11-12 02:18:39,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:41,617 INFO L124 PetriNetUnfolderBase]: 8551/11644 cut-off events. [2023-11-12 02:18:41,617 INFO L125 PetriNetUnfolderBase]: For 10611/10611 co-relation queries the response was YES. [2023-11-12 02:18:41,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33540 conditions, 11644 events. 8551/11644 cut-off events. For 10611/10611 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53984 event pairs, 1331 based on Foata normal form. 412/12056 useless extension candidates. Maximal degree in co-relation 33531. Up to 7761 conditions per place. [2023-11-12 02:18:41,722 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 63 selfloop transitions, 17 changer transitions 37/117 dead transitions. [2023-11-12 02:18:41,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 117 transitions, 671 flow [2023-11-12 02:18:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1060 transitions. [2023-11-12 02:18:41,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431438127090301 [2023-11-12 02:18:41,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1060 transitions. [2023-11-12 02:18:41,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1060 transitions. [2023-11-12 02:18:41,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:41,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1060 transitions. [2023-11-12 02:18:41,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.5) internal successors, (1060), 8 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,741 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 136 flow. Second operand 8 states and 1060 transitions. [2023-11-12 02:18:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 117 transitions, 671 flow [2023-11-12 02:18:41,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 117 transitions, 669 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:41,774 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 298 flow [2023-11-12 02:18:41,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-12 02:18:41,777 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-11-12 02:18:41,778 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 298 flow [2023-11-12 02:18:41,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:41,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:41,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:41,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:41,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1451840606, now seen corresponding path program 1 times [2023-11-12 02:18:41,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292449877] [2023-11-12 02:18:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:42,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292449877] [2023-11-12 02:18:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292449877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363688521] [2023-11-12 02:18:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:42,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:42,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 299 [2023-11-12 02:18:42,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:42,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:42,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 299 [2023-11-12 02:18:42,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:43,660 INFO L124 PetriNetUnfolderBase]: 7223/9918 cut-off events. [2023-11-12 02:18:43,661 INFO L125 PetriNetUnfolderBase]: For 23938/24128 co-relation queries the response was YES. [2023-11-12 02:18:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37116 conditions, 9918 events. 7223/9918 cut-off events. For 23938/24128 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 46273 event pairs, 1883 based on Foata normal form. 458/10264 useless extension candidates. Maximal degree in co-relation 37102. Up to 6013 conditions per place. [2023-11-12 02:18:43,746 INFO L140 encePairwiseOnDemand]: 295/299 looper letters, 55 selfloop transitions, 5 changer transitions 22/85 dead transitions. [2023-11-12 02:18:43,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 659 flow [2023-11-12 02:18:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2023-11-12 02:18:43,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4454849498327759 [2023-11-12 02:18:43,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2023-11-12 02:18:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2023-11-12 02:18:43,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:43,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2023-11-12 02:18:43,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,761 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 298 flow. Second operand 5 states and 666 transitions. [2023-11-12 02:18:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 659 flow [2023-11-12 02:18:43,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 632 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:43,835 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 298 flow [2023-11-12 02:18:43,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-12 02:18:43,838 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2023-11-12 02:18:43,843 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 298 flow [2023-11-12 02:18:43,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:43,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:43,844 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:43,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2059091351, now seen corresponding path program 1 times [2023-11-12 02:18:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877025976] [2023-11-12 02:18:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877025976] [2023-11-12 02:18:44,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877025976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:44,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:44,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:44,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845644378] [2023-11-12 02:18:44,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:44,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:44,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:44,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:44,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 299 [2023-11-12 02:18:44,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:44,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 299 [2023-11-12 02:18:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:46,879 INFO L124 PetriNetUnfolderBase]: 7835/10672 cut-off events. [2023-11-12 02:18:46,879 INFO L125 PetriNetUnfolderBase]: For 22946/22946 co-relation queries the response was YES. [2023-11-12 02:18:46,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40324 conditions, 10672 events. 7835/10672 cut-off events. For 22946/22946 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 48726 event pairs, 663 based on Foata normal form. 192/10864 useless extension candidates. Maximal degree in co-relation 40308. Up to 7977 conditions per place. [2023-11-12 02:18:46,997 INFO L140 encePairwiseOnDemand]: 288/299 looper letters, 96 selfloop transitions, 33 changer transitions 21/150 dead transitions. [2023-11-12 02:18:46,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 150 transitions, 1129 flow [2023-11-12 02:18:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:18:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-12 02:18:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1291 transitions. [2023-11-12 02:18:47,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4317725752508361 [2023-11-12 02:18:47,006 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1291 transitions. [2023-11-12 02:18:47,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1291 transitions. [2023-11-12 02:18:47,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:47,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1291 transitions. [2023-11-12 02:18:47,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.1) internal successors, (1291), 10 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 299.0) internal successors, (3289), 11 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 299.0) internal successors, (3289), 11 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,022 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 298 flow. Second operand 10 states and 1291 transitions. [2023-11-12 02:18:47,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 150 transitions, 1129 flow [2023-11-12 02:18:47,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 150 transitions, 1063 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:47,192 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 609 flow [2023-11-12 02:18:47,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-11-12 02:18:47,196 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-11-12 02:18:47,196 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 609 flow [2023-11-12 02:18:47,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:47,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:47,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:47,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash -318230449, now seen corresponding path program 2 times [2023-11-12 02:18:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649221101] [2023-11-12 02:18:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649221101] [2023-11-12 02:18:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649221101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:47,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723843317] [2023-11-12 02:18:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:47,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-12 02:18:48,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:48,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:48,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-12 02:18:48,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:49,378 INFO L124 PetriNetUnfolderBase]: 6809/9636 cut-off events. [2023-11-12 02:18:49,378 INFO L125 PetriNetUnfolderBase]: For 24582/24834 co-relation queries the response was YES. [2023-11-12 02:18:49,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38320 conditions, 9636 events. 6809/9636 cut-off events. For 24582/24834 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 48247 event pairs, 1141 based on Foata normal form. 192/9766 useless extension candidates. Maximal degree in co-relation 38300. Up to 6244 conditions per place. [2023-11-12 02:18:49,482 INFO L140 encePairwiseOnDemand]: 291/299 looper letters, 62 selfloop transitions, 20 changer transitions 15/115 dead transitions. [2023-11-12 02:18:49,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 115 transitions, 974 flow [2023-11-12 02:18:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 973 transitions. [2023-11-12 02:18:49,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46488294314381273 [2023-11-12 02:18:49,487 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 973 transitions. [2023-11-12 02:18:49,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 973 transitions. [2023-11-12 02:18:49,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:49,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 973 transitions. [2023-11-12 02:18:49,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,497 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,497 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 609 flow. Second operand 7 states and 973 transitions. [2023-11-12 02:18:49,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 115 transitions, 974 flow [2023-11-12 02:18:49,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 956 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:49,681 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 674 flow [2023-11-12 02:18:49,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=674, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2023-11-12 02:18:49,682 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2023-11-12 02:18:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 674 flow [2023-11-12 02:18:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:49,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:49,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:49,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:49,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -295887199, now seen corresponding path program 3 times [2023-11-12 02:18:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555571272] [2023-11-12 02:18:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555571272] [2023-11-12 02:18:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555571272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:50,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279110051] [2023-11-12 02:18:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:50,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-12 02:18:50,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 674 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:50,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-12 02:18:50,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:51,725 INFO L124 PetriNetUnfolderBase]: 6882/9753 cut-off events. [2023-11-12 02:18:51,725 INFO L125 PetriNetUnfolderBase]: For 36976/37066 co-relation queries the response was YES. [2023-11-12 02:18:51,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42094 conditions, 9753 events. 6882/9753 cut-off events. For 36976/37066 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 49150 event pairs, 1101 based on Foata normal form. 192/9883 useless extension candidates. Maximal degree in co-relation 42071. Up to 6364 conditions per place. [2023-11-12 02:18:51,814 INFO L140 encePairwiseOnDemand]: 291/299 looper letters, 64 selfloop transitions, 21 changer transitions 15/118 dead transitions. [2023-11-12 02:18:51,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 1083 flow [2023-11-12 02:18:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 972 transitions. [2023-11-12 02:18:51,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46440516005733395 [2023-11-12 02:18:51,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 972 transitions. [2023-11-12 02:18:51,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 972 transitions. [2023-11-12 02:18:51,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:51,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 972 transitions. [2023-11-12 02:18:51,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.85714285714286) internal successors, (972), 7 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:51,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:51,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:51,830 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 674 flow. Second operand 7 states and 972 transitions. [2023-11-12 02:18:51,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 1083 flow [2023-11-12 02:18:52,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 996 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:52,092 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 746 flow [2023-11-12 02:18:52,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=746, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2023-11-12 02:18:52,093 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2023-11-12 02:18:52,093 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 746 flow [2023-11-12 02:18:52,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:52,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:52,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:52,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:52,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1400700641, now seen corresponding path program 4 times [2023-11-12 02:18:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364954776] [2023-11-12 02:18:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364954776] [2023-11-12 02:18:52,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364954776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:52,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557401553] [2023-11-12 02:18:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:52,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:52,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-12 02:18:52,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 746 flow. Second operand has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:52,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:52,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-12 02:18:52,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:54,256 INFO L124 PetriNetUnfolderBase]: 7114/10113 cut-off events. [2023-11-12 02:18:54,256 INFO L125 PetriNetUnfolderBase]: For 39022/39112 co-relation queries the response was YES. [2023-11-12 02:18:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43588 conditions, 10113 events. 7114/10113 cut-off events. For 39022/39112 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51715 event pairs, 1079 based on Foata normal form. 224/10275 useless extension candidates. Maximal degree in co-relation 43563. Up to 5272 conditions per place. [2023-11-12 02:18:54,363 INFO L140 encePairwiseOnDemand]: 292/299 looper letters, 60 selfloop transitions, 31 changer transitions 16/125 dead transitions. [2023-11-12 02:18:54,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 125 transitions, 1163 flow [2023-11-12 02:18:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1104 transitions. [2023-11-12 02:18:54,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-11-12 02:18:54,368 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1104 transitions. [2023-11-12 02:18:54,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1104 transitions. [2023-11-12 02:18:54,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:54,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1104 transitions. [2023-11-12 02:18:54,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,379 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,379 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 746 flow. Second operand 8 states and 1104 transitions. [2023-11-12 02:18:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 125 transitions, 1163 flow [2023-11-12 02:18:54,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 1127 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:54,671 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 846 flow [2023-11-12 02:18:54,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=846, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-11-12 02:18:54,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2023-11-12 02:18:54,672 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 846 flow [2023-11-12 02:18:54,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:54,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:18:54,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:54,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1874162796, now seen corresponding path program 1 times [2023-11-12 02:18:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494056564] [2023-11-12 02:18:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:54,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494056564] [2023-11-12 02:18:54,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494056564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:54,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:54,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278268918] [2023-11-12 02:18:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:54,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 299 [2023-11-12 02:18:54,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 846 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:54,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:54,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 299 [2023-11-12 02:18:54,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:55,725 INFO L124 PetriNetUnfolderBase]: 3868/5684 cut-off events. [2023-11-12 02:18:55,725 INFO L125 PetriNetUnfolderBase]: For 32927/33584 co-relation queries the response was YES. [2023-11-12 02:18:55,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26795 conditions, 5684 events. 3868/5684 cut-off events. For 32927/33584 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 29434 event pairs, 961 based on Foata normal form. 331/5837 useless extension candidates. Maximal degree in co-relation 26768. Up to 4374 conditions per place. [2023-11-12 02:18:55,781 INFO L140 encePairwiseOnDemand]: 293/299 looper letters, 87 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2023-11-12 02:18:55,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 1300 flow [2023-11-12 02:18:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-11-12 02:18:55,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2023-11-12 02:18:55,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-11-12 02:18:55,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-11-12 02:18:55,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:55,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-11-12 02:18:55,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-11-12 02:18:55,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:55,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:55,789 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 846 flow. Second operand 3 states and 437 transitions. [2023-11-12 02:18:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 1300 flow [2023-11-12 02:18:55,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 1222 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:55,857 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 795 flow [2023-11-12 02:18:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=795, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-11-12 02:18:55,858 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2023-11-12 02:18:55,858 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 795 flow [2023-11-12 02:18:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:18:55,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:55,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1047463326, now seen corresponding path program 1 times [2023-11-12 02:18:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118965407] [2023-11-12 02:18:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:56,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118965407] [2023-11-12 02:18:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118965407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840800229] [2023-11-12 02:18:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:56,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:56,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 299 [2023-11-12 02:18:56,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 795 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:56,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:56,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 299 [2023-11-12 02:18:56,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:56,650 INFO L124 PetriNetUnfolderBase]: 1892/2958 cut-off events. [2023-11-12 02:18:56,650 INFO L125 PetriNetUnfolderBase]: For 12411/12771 co-relation queries the response was YES. [2023-11-12 02:18:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14122 conditions, 2958 events. 1892/2958 cut-off events. For 12411/12771 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14848 event pairs, 331 based on Foata normal form. 303/3161 useless extension candidates. Maximal degree in co-relation 14097. Up to 1282 conditions per place. [2023-11-12 02:18:56,677 INFO L140 encePairwiseOnDemand]: 293/299 looper letters, 114 selfloop transitions, 9 changer transitions 0/145 dead transitions. [2023-11-12 02:18:56,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1587 flow [2023-11-12 02:18:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 584 transitions. [2023-11-12 02:18:56,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882943143812709 [2023-11-12 02:18:56,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 584 transitions. [2023-11-12 02:18:56,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 584 transitions. [2023-11-12 02:18:56,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:56,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 584 transitions. [2023-11-12 02:18:56,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:56,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:56,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:56,687 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 795 flow. Second operand 4 states and 584 transitions. [2023-11-12 02:18:56,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1587 flow [2023-11-12 02:18:56,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 1582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:56,722 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 842 flow [2023-11-12 02:18:56,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=842, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2023-11-12 02:18:56,723 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2023-11-12 02:18:56,723 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 842 flow [2023-11-12 02:18:56,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:56,724 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] [2023-11-12 02:18:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:18:56,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:56,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1170355669, now seen corresponding path program 1 times [2023-11-12 02:18:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961236968] [2023-11-12 02:18:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961236968] [2023-11-12 02:18:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961236968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237679892] [2023-11-12 02:18:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:57,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 299 [2023-11-12 02:18:57,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:57,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 299 [2023-11-12 02:18:57,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:57,861 INFO L124 PetriNetUnfolderBase]: 2663/4219 cut-off events. [2023-11-12 02:18:57,861 INFO L125 PetriNetUnfolderBase]: For 20041/20345 co-relation queries the response was YES. [2023-11-12 02:18:57,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21010 conditions, 4219 events. 2663/4219 cut-off events. For 20041/20345 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 23180 event pairs, 401 based on Foata normal form. 197/4334 useless extension candidates. Maximal degree in co-relation 20984. Up to 2134 conditions per place. [2023-11-12 02:18:57,898 INFO L140 encePairwiseOnDemand]: 295/299 looper letters, 122 selfloop transitions, 2 changer transitions 36/180 dead transitions. [2023-11-12 02:18:57,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 180 transitions, 1974 flow [2023-11-12 02:18:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 710 transitions. [2023-11-12 02:18:57,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47491638795986624 [2023-11-12 02:18:57,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 710 transitions. [2023-11-12 02:18:57,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 710 transitions. [2023-11-12 02:18:57,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:57,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 710 transitions. [2023-11-12 02:18:57,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,910 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 842 flow. Second operand 5 states and 710 transitions. [2023-11-12 02:18:57,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 180 transitions, 1974 flow [2023-11-12 02:18:57,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 180 transitions, 1928 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:57,949 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 835 flow [2023-11-12 02:18:57,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=835, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-11-12 02:18:57,950 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2023-11-12 02:18:57,950 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 835 flow [2023-11-12 02:18:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:57,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:57,951 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] [2023-11-12 02:18:57,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:18:57,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:57,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1735139795, now seen corresponding path program 2 times [2023-11-12 02:18:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853940240] [2023-11-12 02:18:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:58,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853940240] [2023-11-12 02:18:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853940240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:58,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:58,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835357715] [2023-11-12 02:18:58,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:58,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:58,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 299 [2023-11-12 02:18:58,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 835 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:58,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:58,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 299 [2023-11-12 02:18:58,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:58,625 INFO L124 PetriNetUnfolderBase]: 1656/2618 cut-off events. [2023-11-12 02:18:58,625 INFO L125 PetriNetUnfolderBase]: For 12940/13380 co-relation queries the response was YES. [2023-11-12 02:18:58,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12978 conditions, 2618 events. 1656/2618 cut-off events. For 12940/13380 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13689 event pairs, 232 based on Foata normal form. 287/2789 useless extension candidates. Maximal degree in co-relation 12949. Up to 963 conditions per place. [2023-11-12 02:18:58,649 INFO L140 encePairwiseOnDemand]: 293/299 looper letters, 111 selfloop transitions, 13 changer transitions 0/147 dead transitions. [2023-11-12 02:18:58,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 147 transitions, 1588 flow [2023-11-12 02:18:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2023-11-12 02:18:58,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48762541806020065 [2023-11-12 02:18:58,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2023-11-12 02:18:58,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2023-11-12 02:18:58,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:58,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2023-11-12 02:18:58,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:58,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:58,659 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:58,660 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 835 flow. Second operand 5 states and 729 transitions. [2023-11-12 02:18:58,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 147 transitions, 1588 flow [2023-11-12 02:18:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 147 transitions, 1475 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-12 02:18:58,689 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 726 flow [2023-11-12 02:18:58,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=726, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2023-11-12 02:18:58,690 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2023-11-12 02:18:58,690 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 726 flow [2023-11-12 02:18:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:58,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:58,691 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] [2023-11-12 02:18:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:18:58,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:18:58,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1292135965, now seen corresponding path program 1 times [2023-11-12 02:18:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:58,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272202224] [2023-11-12 02:18:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:58,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:59,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272202224] [2023-11-12 02:18:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272202224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:59,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:59,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311601117] [2023-11-12 02:18:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:59,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 299 [2023-11-12 02:18:59,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 726 flow. Second operand has 8 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:59,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:59,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 299 [2023-11-12 02:18:59,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:00,993 INFO L124 PetriNetUnfolderBase]: 4014/6140 cut-off events. [2023-11-12 02:19:00,993 INFO L125 PetriNetUnfolderBase]: For 29830/30040 co-relation queries the response was YES. [2023-11-12 02:19:01,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32702 conditions, 6140 events. 4014/6140 cut-off events. For 29830/30040 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 34212 event pairs, 168 based on Foata normal form. 189/6214 useless extension candidates. Maximal degree in co-relation 32676. Up to 2946 conditions per place. [2023-11-12 02:19:01,033 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 181 selfloop transitions, 66 changer transitions 46/297 dead transitions. [2023-11-12 02:19:01,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 297 transitions, 3198 flow [2023-11-12 02:19:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:19:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:19:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1426 transitions. [2023-11-12 02:19:01,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43356643356643354 [2023-11-12 02:19:01,039 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1426 transitions. [2023-11-12 02:19:01,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1426 transitions. [2023-11-12 02:19:01,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:01,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1426 transitions. [2023-11-12 02:19:01,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.63636363636363) internal successors, (1426), 11 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:01,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:01,051 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:01,052 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 726 flow. Second operand 11 states and 1426 transitions. [2023-11-12 02:19:01,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 297 transitions, 3198 flow [2023-11-12 02:19:01,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 297 transitions, 3028 flow, removed 42 selfloop flow, removed 3 redundant places. [2023-11-12 02:19:01,173 INFO L231 Difference]: Finished difference. Result has 95 places, 142 transitions, 1646 flow [2023-11-12 02:19:01,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1646, PETRI_PLACES=95, PETRI_TRANSITIONS=142} [2023-11-12 02:19:01,174 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2023-11-12 02:19:01,175 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 142 transitions, 1646 flow [2023-11-12 02:19:01,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:01,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:01,176 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] [2023-11-12 02:19:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:19:01,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:19:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2043132351, now seen corresponding path program 2 times [2023-11-12 02:19:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842338959] [2023-11-12 02:19:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:01,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842338959] [2023-11-12 02:19:01,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842338959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:19:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440502499] [2023-11-12 02:19:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:19:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:19:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:19:01,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 299 [2023-11-12 02:19:01,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 142 transitions, 1646 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:01,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:01,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 299 [2023-11-12 02:19:01,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:03,049 INFO L124 PetriNetUnfolderBase]: 4566/7066 cut-off events. [2023-11-12 02:19:03,049 INFO L125 PetriNetUnfolderBase]: For 45658/45937 co-relation queries the response was YES. [2023-11-12 02:19:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41731 conditions, 7066 events. 4566/7066 cut-off events. For 45658/45937 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 41612 event pairs, 539 based on Foata normal form. 200/7109 useless extension candidates. Maximal degree in co-relation 41697. Up to 3154 conditions per place. [2023-11-12 02:19:03,113 INFO L140 encePairwiseOnDemand]: 291/299 looper letters, 137 selfloop transitions, 14 changer transitions 109/264 dead transitions. [2023-11-12 02:19:03,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 264 transitions, 3313 flow [2023-11-12 02:19:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:19:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:19:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 929 transitions. [2023-11-12 02:19:03,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438604873387482 [2023-11-12 02:19:03,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 929 transitions. [2023-11-12 02:19:03,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 929 transitions. [2023-11-12 02:19:03,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:03,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 929 transitions. [2023-11-12 02:19:03,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.71428571428572) internal successors, (929), 7 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,125 INFO L175 Difference]: Start difference. First operand has 95 places, 142 transitions, 1646 flow. Second operand 7 states and 929 transitions. [2023-11-12 02:19:03,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 264 transitions, 3313 flow [2023-11-12 02:19:03,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 264 transitions, 3273 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-11-12 02:19:03,409 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 1157 flow [2023-11-12 02:19:03,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1157, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2023-11-12 02:19:03,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2023-11-12 02:19:03,411 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 1157 flow [2023-11-12 02:19:03,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:03,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:03,411 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] [2023-11-12 02:19:03,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:19:03,412 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-12 02:19:03,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1060976745, now seen corresponding path program 3 times [2023-11-12 02:19:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:03,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565057040] [2023-11-12 02:19:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:03,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat