./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix002.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix002.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI --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 e77d530bbfcfe22638f8b89e94c23e25f591d8037158e571482779188378fc47 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:01:42,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:01:42,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:01:42,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:01:42,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:01:42,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:01:42,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:01:42,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:01:42,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:01:42,379 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:01:42,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:01:42,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:01:42,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:01:42,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:01:42,384 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:01:42,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:01:42,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:01:42,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:01:42,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:01:42,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:01:42,386 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:01:42,387 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:01:42,387 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:01:42,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:01:42,388 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:01:42,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:01:42,389 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:01:42,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:01:42,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:01:42,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:01:42,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:01:42,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:01:42,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:42,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:01:42,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:01:42,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:01:42,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:01:42,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:01:42,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:01:42,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:01:42,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:01:42,395 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_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e77d530bbfcfe22638f8b89e94c23e25f591d8037158e571482779188378fc47 [2023-11-24 22:01:42,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:01:42,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:01:42,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:01:42,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:01:42,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:01:42,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix002.oepc.i [2023-11-24 22:01:45,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:01:46,118 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:01:46,119 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/sv-benchmarks/c/pthread-wmm/mix002.oepc.i [2023-11-24 22:01:46,138 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/data/da3e814aa/94f3ecc0bef44d7fbfb1722535d7112c/FLAGb6512bbc3 [2023-11-24 22:01:46,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/data/da3e814aa/94f3ecc0bef44d7fbfb1722535d7112c [2023-11-24 22:01:46,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:01:46,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:01:46,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:46,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:01:46,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:01:46,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c115755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46, skipping insertion in model container [2023-11-24 22:01:46,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:46,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:46,844 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:01:46,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:46,991 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:46,996 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:47,005 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:01:47,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47 WrapperNode [2023-11-24 22:01:47,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:47,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:47,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:01:47,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:01:47,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,089 INFO L138 Inliner]: procedures = 176, calls = 63, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2023-11-24 22:01:47,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:47,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:01:47,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:01:47,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:01:47,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,127 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 22:01:47,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:01:47,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:01:47,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:01:47,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:01:47,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (1/1) ... [2023-11-24 22:01:47,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:47,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:01:47,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486694d6-6001-40d0-85d2-bf4eb928aa25/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:01:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:01:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:01:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:01:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:01:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:01:47,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:01:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:01:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:01:47,237 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 22:01:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 22:01:47,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 22:01:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 22:01:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 22:01:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 22:01:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:01:47,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:01:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:01:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:01:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:01:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:01:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:01:47,244 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:01:47,472 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:01:47,475 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:01:47,921 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:01:48,190 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:01:48,192 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:01:48,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:48 BoogieIcfgContainer [2023-11-24 22:01:48,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:01:48,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:01:48,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:01:48,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:01:48,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:01:46" (1/3) ... [2023-11-24 22:01:48,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:48, skipping insertion in model container [2023-11-24 22:01:48,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:47" (2/3) ... [2023-11-24 22:01:48,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:48, skipping insertion in model container [2023-11-24 22:01:48,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:48" (3/3) ... [2023-11-24 22:01:48,206 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.oepc.i [2023-11-24 22:01:48,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:01:48,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-24 22:01:48,230 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:01:48,308 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 22:01:48,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 57 transitions, 126 flow [2023-11-24 22:01:48,423 INFO L124 PetriNetUnfolderBase]: 2/54 cut-off events. [2023-11-24 22:01:48,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:01:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-24 22:01:48,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 57 transitions, 126 flow [2023-11-24 22:01:48,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 117 flow [2023-11-24 22:01:48,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:01:48,463 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;@5a7a0724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:01:48,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 22:01:48,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:01:48,468 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:01:48,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:01:48,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:48,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:01:48,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:48,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:48,475 INFO L85 PathProgramCache]: Analyzing trace with hash 13051, now seen corresponding path program 1 times [2023-11-24 22:01:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:48,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878248875] [2023-11-24 22:01:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:48,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:48,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878248875] [2023-11-24 22:01:48,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878248875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:48,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:48,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743929530] [2023-11-24 22:01:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:48,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:49,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-24 22:01:49,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:49,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-24 22:01:49,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:49,647 INFO L124 PetriNetUnfolderBase]: 1057/2060 cut-off events. [2023-11-24 22:01:49,647 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 22:01:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 2060 events. 1057/2060 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14391 event pairs, 791 based on Foata normal form. 120/1967 useless extension candidates. Maximal degree in co-relation 3672. Up to 1193 conditions per place. [2023-11-24 22:01:49,676 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-24 22:01:49,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 191 flow [2023-11-24 22:01:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-24 22:01:49,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-24 22:01:49,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-24 22:01:49,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-24 22:01:49,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:49,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-24 22:01:49,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,706 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 117 flow. Second operand 3 states and 125 transitions. [2023-11-24 22:01:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 191 flow [2023-11-24 22:01:49,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:01:49,714 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 110 flow [2023-11-24 22:01:49,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-24 22:01:49,721 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-11-24 22:01:49,721 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 110 flow [2023-11-24 22:01:49,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:49,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:01:49,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:01:49,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:49,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash 13052, now seen corresponding path program 1 times [2023-11-24 22:01:49,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:49,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53358456] [2023-11-24 22:01:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:49,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53358456] [2023-11-24 22:01:49,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53358456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:49,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:49,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:49,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082318074] [2023-11-24 22:01:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:49,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:49,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:49,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-24 22:01:49,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:49,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:49,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-24 22:01:49,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:50,361 INFO L124 PetriNetUnfolderBase]: 1057/2059 cut-off events. [2023-11-24 22:01:50,362 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 22:01:50,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 2059 events. 1057/2059 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14391 event pairs, 791 based on Foata normal form. 1/1847 useless extension candidates. Maximal degree in co-relation 3732. Up to 1192 conditions per place. [2023-11-24 22:01:50,384 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 29 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-24 22:01:50,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 188 flow [2023-11-24 22:01:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-24 22:01:50,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-24 22:01:50,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-24 22:01:50,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-24 22:01:50,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:50,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-24 22:01:50,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,392 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 110 flow. Second operand 3 states and 125 transitions. [2023-11-24 22:01:50,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 188 flow [2023-11-24 22:01:50,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:50,397 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 108 flow [2023-11-24 22:01:50,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-11-24 22:01:50,399 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-11-24 22:01:50,399 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 108 flow [2023-11-24 22:01:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:50,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:50,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:01:50,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:50,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 389194271, now seen corresponding path program 1 times [2023-11-24 22:01:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:50,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278527698] [2023-11-24 22:01:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278527698] [2023-11-24 22:01:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278527698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050201222] [2023-11-24 22:01:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:50,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-24 22:01:50,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:50,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-24 22:01:50,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:50,938 INFO L124 PetriNetUnfolderBase]: 1061/2050 cut-off events. [2023-11-24 22:01:50,938 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-24 22:01:50,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 2050 events. 1061/2050 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14270 event pairs, 815 based on Foata normal form. 0/1847 useless extension candidates. Maximal degree in co-relation 3732. Up to 1195 conditions per place. [2023-11-24 22:01:50,961 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 30 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-24 22:01:50,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 188 flow [2023-11-24 22:01:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-24 22:01:50,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2023-11-24 22:01:50,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-24 22:01:50,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-24 22:01:50,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:50,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-24 22:01:50,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,973 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 108 flow. Second operand 3 states and 123 transitions. [2023-11-24 22:01:50,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 188 flow [2023-11-24 22:01:50,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:50,979 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 106 flow [2023-11-24 22:01:50,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-24 22:01:50,981 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-24 22:01:50,982 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 106 flow [2023-11-24 22:01:50,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:50,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:01:50,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:50,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash 389194272, now seen corresponding path program 1 times [2023-11-24 22:01:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:50,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659668806] [2023-11-24 22:01:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:51,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:51,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659668806] [2023-11-24 22:01:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659668806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:51,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:51,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:51,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559413054] [2023-11-24 22:01:51,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:51,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-24 22:01:51,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:51,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-24 22:01:51,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:51,502 INFO L124 PetriNetUnfolderBase]: 1057/2049 cut-off events. [2023-11-24 22:01:51,502 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-24 22:01:51,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 2049 events. 1057/2049 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14472 event pairs, 571 based on Foata normal form. 5/1854 useless extension candidates. Maximal degree in co-relation 3727. Up to 1186 conditions per place. [2023-11-24 22:01:51,524 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 29 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-24 22:01:51,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 184 flow [2023-11-24 22:01:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-24 22:01:51,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309941520467836 [2023-11-24 22:01:51,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-24 22:01:51,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-24 22:01:51,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:51,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-24 22:01:51,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,528 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 106 flow. Second operand 3 states and 125 transitions. [2023-11-24 22:01:51,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 184 flow [2023-11-24 22:01:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:51,531 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 104 flow [2023-11-24 22:01:51,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-24 22:01:51,532 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-11-24 22:01:51,533 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 104 flow [2023-11-24 22:01:51,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:51,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 22:01:51,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:01:51,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:51,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 389195794, now seen corresponding path program 1 times [2023-11-24 22:01:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:51,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855136070] [2023-11-24 22:01:51,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855136070] [2023-11-24 22:01:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855136070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:51,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295344360] [2023-11-24 22:01:51,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:51,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:51,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 57 [2023-11-24 22:01:51,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:51,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:51,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 57 [2023-11-24 22:01:51,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:52,065 INFO L124 PetriNetUnfolderBase]: 825/1750 cut-off events. [2023-11-24 22:01:52,065 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-24 22:01:52,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3081 conditions, 1750 events. 825/1750 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12530 event pairs, 129 based on Foata normal form. 0/1726 useless extension candidates. Maximal degree in co-relation 3071. Up to 1009 conditions per place. [2023-11-24 22:01:52,082 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 33 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-24 22:01:52,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 216 flow [2023-11-24 22:01:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2023-11-24 22:01:52,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.783625730994152 [2023-11-24 22:01:52,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2023-11-24 22:01:52,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2023-11-24 22:01:52,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:52,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2023-11-24 22:01:52,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,087 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 104 flow. Second operand 3 states and 134 transitions. [2023-11-24 22:01:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 216 flow [2023-11-24 22:01:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:52,091 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 100 flow [2023-11-24 22:01:52,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-24 22:01:52,094 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-24 22:01:52,094 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 100 flow [2023-11-24 22:01:52,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:52,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:52,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:01:52,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1924775771, now seen corresponding path program 1 times [2023-11-24 22:01:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318457238] [2023-11-24 22:01:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:52,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318457238] [2023-11-24 22:01:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318457238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:52,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:52,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:52,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620354361] [2023-11-24 22:01:52,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:52,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:52,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:52,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 57 [2023-11-24 22:01:52,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 57 [2023-11-24 22:01:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:52,549 INFO L124 PetriNetUnfolderBase]: 738/1453 cut-off events. [2023-11-24 22:01:52,549 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-24 22:01:52,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1453 events. 738/1453 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9658 event pairs, 428 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 2694. Up to 934 conditions per place. [2023-11-24 22:01:52,567 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 27 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-24 22:01:52,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 174 flow [2023-11-24 22:01:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 22:01:52,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2023-11-24 22:01:52,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 22:01:52,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 22:01:52,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:52,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 22:01:52,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,571 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 100 flow. Second operand 3 states and 120 transitions. [2023-11-24 22:01:52,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 174 flow [2023-11-24 22:01:52,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:52,575 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 22:01:52,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-24 22:01:52,579 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-24 22:01:52,580 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 22:01:52,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:52,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:01:52,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:52,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1924775770, now seen corresponding path program 1 times [2023-11-24 22:01:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:52,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320439097] [2023-11-24 22:01:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:52,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:52,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:52,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320439097] [2023-11-24 22:01:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320439097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:52,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835958119] [2023-11-24 22:01:52,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:52,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:52,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 57 [2023-11-24 22:01:52,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:52,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:52,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 57 [2023-11-24 22:01:52,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:53,012 INFO L124 PetriNetUnfolderBase]: 721/1444 cut-off events. [2023-11-24 22:01:53,012 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-24 22:01:53,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 1444 events. 721/1444 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9742 event pairs, 260 based on Foata normal form. 12/1408 useless extension candidates. Maximal degree in co-relation 2621. Up to 905 conditions per place. [2023-11-24 22:01:53,028 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 26 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-24 22:01:53,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 168 flow [2023-11-24 22:01:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-24 22:01:53,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2023-11-24 22:01:53,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-24 22:01:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-24 22:01:53,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:53,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-24 22:01:53,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,038 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 122 transitions. [2023-11-24 22:01:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 168 flow [2023-11-24 22:01:53,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:53,056 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 22:01:53,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-24 22:01:53,059 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-11-24 22:01:53,060 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 22:01:53,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:53,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:53,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:01:53,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:53,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -739424369, now seen corresponding path program 1 times [2023-11-24 22:01:53,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478559924] [2023-11-24 22:01:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478559924] [2023-11-24 22:01:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478559924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:53,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:01:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119262648] [2023-11-24 22:01:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:53,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:01:53,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:53,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:01:53,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:01:53,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-24 22:01:53,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:53,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:53,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-24 22:01:53,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:54,902 INFO L124 PetriNetUnfolderBase]: 1803/3302 cut-off events. [2023-11-24 22:01:54,903 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-24 22:01:54,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 3302 events. 1803/3302 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23611 event pairs, 582 based on Foata normal form. 64/3336 useless extension candidates. Maximal degree in co-relation 6181. Up to 1231 conditions per place. [2023-11-24 22:01:54,932 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 53 selfloop transitions, 5 changer transitions 11/88 dead transitions. [2023-11-24 22:01:54,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 334 flow [2023-11-24 22:01:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:01:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:01:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2023-11-24 22:01:54,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 22:01:54,938 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 266 transitions. [2023-11-24 22:01:54,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 266 transitions. [2023-11-24 22:01:54,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:54,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 266 transitions. [2023-11-24 22:01:54,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,942 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,942 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 7 states and 266 transitions. [2023-11-24 22:01:54,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 334 flow [2023-11-24 22:01:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:54,947 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 120 flow [2023-11-24 22:01:54,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=120, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-11-24 22:01:54,949 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-11-24 22:01:54,950 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 120 flow [2023-11-24 22:01:54,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:54,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:54,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:54,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:01:54,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:54,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash -739423112, now seen corresponding path program 1 times [2023-11-24 22:01:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986299640] [2023-11-24 22:01:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:55,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986299640] [2023-11-24 22:01:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986299640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113971446] [2023-11-24 22:01:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:55,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:55,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-24 22:01:55,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:55,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:55,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-24 22:01:55,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:56,923 INFO L124 PetriNetUnfolderBase]: 6294/10187 cut-off events. [2023-11-24 22:01:56,923 INFO L125 PetriNetUnfolderBase]: For 1164/1169 co-relation queries the response was YES. [2023-11-24 22:01:56,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20500 conditions, 10187 events. 6294/10187 cut-off events. For 1164/1169 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 72965 event pairs, 3666 based on Foata normal form. 1/9896 useless extension candidates. Maximal degree in co-relation 20485. Up to 6780 conditions per place. [2023-11-24 22:01:57,000 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 46 selfloop transitions, 7 changer transitions 40/109 dead transitions. [2023-11-24 22:01:57,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 472 flow [2023-11-24 22:01:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:01:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:01:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2023-11-24 22:01:57,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-24 22:01:57,002 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 292 transitions. [2023-11-24 22:01:57,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 292 transitions. [2023-11-24 22:01:57,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:57,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 292 transitions. [2023-11-24 22:01:57,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.5) internal successors, (292), 8 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,006 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,006 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 120 flow. Second operand 8 states and 292 transitions. [2023-11-24 22:01:57,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 472 flow [2023-11-24 22:01:57,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 464 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-24 22:01:57,023 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 177 flow [2023-11-24 22:01:57,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-24 22:01:57,025 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2023-11-24 22:01:57,025 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 177 flow [2023-11-24 22:01:57,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:57,026 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] [2023-11-24 22:01:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:01:57,026 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash -609715741, now seen corresponding path program 1 times [2023-11-24 22:01:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617433901] [2023-11-24 22:01:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617433901] [2023-11-24 22:01:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617433901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:57,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:01:57,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475379309] [2023-11-24 22:01:57,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:57,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:01:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:01:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:01:57,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-24 22:01:57,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:57,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:57,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-24 22:01:57,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:59,334 INFO L124 PetriNetUnfolderBase]: 6692/10815 cut-off events. [2023-11-24 22:01:59,334 INFO L125 PetriNetUnfolderBase]: For 10209/10217 co-relation queries the response was YES. [2023-11-24 22:01:59,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27570 conditions, 10815 events. 6692/10815 cut-off events. For 10209/10217 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 75982 event pairs, 955 based on Foata normal form. 260/11039 useless extension candidates. Maximal degree in co-relation 27551. Up to 5403 conditions per place. [2023-11-24 22:01:59,432 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 91 selfloop transitions, 12 changer transitions 5/124 dead transitions. [2023-11-24 22:01:59,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 124 transitions, 677 flow [2023-11-24 22:01:59,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:01:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:01:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2023-11-24 22:01:59,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 22:01:59,435 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 304 transitions. [2023-11-24 22:01:59,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 304 transitions. [2023-11-24 22:01:59,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:59,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 304 transitions. [2023-11-24 22:01:59,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:59,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:59,439 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:59,439 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 177 flow. Second operand 8 states and 304 transitions. [2023-11-24 22:01:59,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 124 transitions, 677 flow [2023-11-24 22:01:59,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 124 transitions, 652 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 22:01:59,565 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 255 flow [2023-11-24 22:01:59,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=255, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-11-24 22:01:59,566 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-11-24 22:01:59,567 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 255 flow [2023-11-24 22:01:59,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:59,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:59,567 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] [2023-11-24 22:01:59,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:01:59,568 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:01:59,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:59,569 INFO L85 PathProgramCache]: Analyzing trace with hash -184104612, now seen corresponding path program 1 times [2023-11-24 22:01:59,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:59,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452802619] [2023-11-24 22:01:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:59,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:59,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452802619] [2023-11-24 22:01:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452802619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:01:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706682262] [2023-11-24 22:01:59,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:59,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:01:59,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:59,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:01:59,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:01:59,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-24 22:01:59,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:59,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:59,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-24 22:01:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:01,945 INFO L124 PetriNetUnfolderBase]: 8622/13766 cut-off events. [2023-11-24 22:02:01,946 INFO L125 PetriNetUnfolderBase]: For 17968/17982 co-relation queries the response was YES. [2023-11-24 22:02:01,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36954 conditions, 13766 events. 8622/13766 cut-off events. For 17968/17982 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 99789 event pairs, 3835 based on Foata normal form. 223/13962 useless extension candidates. Maximal degree in co-relation 36932. Up to 5511 conditions per place. [2023-11-24 22:02:02,052 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 99 selfloop transitions, 24 changer transitions 5/144 dead transitions. [2023-11-24 22:02:02,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 914 flow [2023-11-24 22:02:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:02:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:02:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2023-11-24 22:02:02,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 22:02:02,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 304 transitions. [2023-11-24 22:02:02,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 304 transitions. [2023-11-24 22:02:02,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:02,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 304 transitions. [2023-11-24 22:02:02,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,059 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,060 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 255 flow. Second operand 8 states and 304 transitions. [2023-11-24 22:02:02,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 914 flow [2023-11-24 22:02:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 914 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:02:02,153 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 480 flow [2023-11-24 22:02:02,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=480, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-11-24 22:02:02,154 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2023-11-24 22:02:02,155 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 480 flow [2023-11-24 22:02:02,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:02,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:02,155 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] [2023-11-24 22:02:02,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:02:02,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:02,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:02,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1414524662, now seen corresponding path program 1 times [2023-11-24 22:02:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851498742] [2023-11-24 22:02:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:02,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:02,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851498742] [2023-11-24 22:02:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851498742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:02,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:02,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:02:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276165773] [2023-11-24 22:02:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:02,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:02:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:02,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:02:02,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:02:03,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-24 22:02:03,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 480 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:03,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:03,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-24 22:02:03,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:04,749 INFO L124 PetriNetUnfolderBase]: 4917/9368 cut-off events. [2023-11-24 22:02:04,749 INFO L125 PetriNetUnfolderBase]: For 16425/16590 co-relation queries the response was YES. [2023-11-24 22:02:04,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25812 conditions, 9368 events. 4917/9368 cut-off events. For 16425/16590 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 82339 event pairs, 2370 based on Foata normal form. 205/9336 useless extension candidates. Maximal degree in co-relation 25783. Up to 3187 conditions per place. [2023-11-24 22:02:04,829 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 55 selfloop transitions, 9 changer transitions 30/123 dead transitions. [2023-11-24 22:02:04,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 864 flow [2023-11-24 22:02:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:02:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 22:02:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2023-11-24 22:02:04,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6641604010025063 [2023-11-24 22:02:04,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 265 transitions. [2023-11-24 22:02:04,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 265 transitions. [2023-11-24 22:02:04,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:04,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 265 transitions. [2023-11-24 22:02:04,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:04,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:04,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:04,835 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 480 flow. Second operand 7 states and 265 transitions. [2023-11-24 22:02:04,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 864 flow [2023-11-24 22:02:04,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 123 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:02:04,962 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 399 flow [2023-11-24 22:02:04,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2023-11-24 22:02:04,963 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2023-11-24 22:02:04,963 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 399 flow [2023-11-24 22:02:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:04,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:04,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:04,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:02:04,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:04,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:04,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1267723893, now seen corresponding path program 1 times [2023-11-24 22:02:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:04,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169815668] [2023-11-24 22:02:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:04,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:06,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:06,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169815668] [2023-11-24 22:02:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169815668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:06,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:02:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245651012] [2023-11-24 22:02:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:06,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:02:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:06,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:02:06,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:02:06,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-24 22:02:06,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 399 flow. Second operand has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:06,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:06,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-24 22:02:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:08,521 INFO L124 PetriNetUnfolderBase]: 6085/11485 cut-off events. [2023-11-24 22:02:08,521 INFO L125 PetriNetUnfolderBase]: For 17070/17545 co-relation queries the response was YES. [2023-11-24 22:02:08,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29122 conditions, 11485 events. 6085/11485 cut-off events. For 17070/17545 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 105549 event pairs, 4157 based on Foata normal form. 108/11205 useless extension candidates. Maximal degree in co-relation 29087. Up to 4936 conditions per place. [2023-11-24 22:02:08,645 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 50 selfloop transitions, 15 changer transitions 17/116 dead transitions. [2023-11-24 22:02:08,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 835 flow [2023-11-24 22:02:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:02:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:02:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2023-11-24 22:02:08,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2023-11-24 22:02:08,648 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 288 transitions. [2023-11-24 22:02:08,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 288 transitions. [2023-11-24 22:02:08,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:08,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 288 transitions. [2023-11-24 22:02:08,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:08,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:08,652 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:08,652 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 399 flow. Second operand 8 states and 288 transitions. [2023-11-24 22:02:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 835 flow [2023-11-24 22:02:08,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 785 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-24 22:02:08,844 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 520 flow [2023-11-24 22:02:08,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=520, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2023-11-24 22:02:08,845 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 33 predicate places. [2023-11-24 22:02:08,846 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 520 flow [2023-11-24 22:02:08,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.5) internal successors, (295), 10 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:08,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:08,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:08,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:02:08,847 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:08,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1725314887, now seen corresponding path program 2 times [2023-11-24 22:02:08,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276033054] [2023-11-24 22:02:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276033054] [2023-11-24 22:02:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276033054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:02:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967902437] [2023-11-24 22:02:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:10,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:02:10,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:02:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:02:10,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-24 22:02:10,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:10,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:10,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-24 22:02:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:13,255 INFO L124 PetriNetUnfolderBase]: 8866/17388 cut-off events. [2023-11-24 22:02:13,255 INFO L125 PetriNetUnfolderBase]: For 27185/28266 co-relation queries the response was YES. [2023-11-24 22:02:13,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48189 conditions, 17388 events. 8866/17388 cut-off events. For 27185/28266 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 174858 event pairs, 6257 based on Foata normal form. 123/16971 useless extension candidates. Maximal degree in co-relation 48151. Up to 8976 conditions per place. [2023-11-24 22:02:13,452 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 64 selfloop transitions, 23 changer transitions 17/138 dead transitions. [2023-11-24 22:02:13,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 138 transitions, 1101 flow [2023-11-24 22:02:13,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:02:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:02:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 323 transitions. [2023-11-24 22:02:13,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-24 22:02:13,455 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 323 transitions. [2023-11-24 22:02:13,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 323 transitions. [2023-11-24 22:02:13,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:13,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 323 transitions. [2023-11-24 22:02:13,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.888888888888886) internal successors, (323), 9 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,462 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,462 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 520 flow. Second operand 9 states and 323 transitions. [2023-11-24 22:02:13,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 138 transitions, 1101 flow [2023-11-24 22:02:13,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 138 transitions, 1099 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 22:02:13,693 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 762 flow [2023-11-24 22:02:13,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2023-11-24 22:02:13,694 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 44 predicate places. [2023-11-24 22:02:13,695 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 762 flow [2023-11-24 22:02:13,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.666666666666668) internal successors, (267), 9 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:13,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:13,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:13,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:02:13,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:13,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1540805255, now seen corresponding path program 3 times [2023-11-24 22:02:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:13,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862990782] [2023-11-24 22:02:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862990782] [2023-11-24 22:02:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862990782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:14,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:14,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:02:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116030399] [2023-11-24 22:02:14,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:02:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:02:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:02:14,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 57 [2023-11-24 22:02:14,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:14,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:14,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 57 [2023-11-24 22:02:14,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:18,406 INFO L124 PetriNetUnfolderBase]: 10581/20880 cut-off events. [2023-11-24 22:02:18,406 INFO L125 PetriNetUnfolderBase]: For 45555/46763 co-relation queries the response was YES. [2023-11-24 22:02:18,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62711 conditions, 20880 events. 10581/20880 cut-off events. For 45555/46763 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 216911 event pairs, 7660 based on Foata normal form. 148/20340 useless extension candidates. Maximal degree in co-relation 62667. Up to 8708 conditions per place. [2023-11-24 22:02:18,643 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 67 selfloop transitions, 25 changer transitions 17/143 dead transitions. [2023-11-24 22:02:18,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 143 transitions, 1282 flow [2023-11-24 22:02:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:02:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:02:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-24 22:02:18,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-24 22:02:18,646 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-24 22:02:18,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-24 22:02:18,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:18,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-24 22:02:18,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:18,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:18,651 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:18,652 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 762 flow. Second operand 8 states and 284 transitions. [2023-11-24 22:02:18,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 143 transitions, 1282 flow [2023-11-24 22:02:19,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 143 transitions, 1227 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-24 22:02:19,115 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 819 flow [2023-11-24 22:02:19,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2023-11-24 22:02:19,116 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-11-24 22:02:19,116 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 819 flow [2023-11-24 22:02:19,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.5) internal successors, (285), 10 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:19,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:19,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 22:02:19,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:19,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash -34025247, now seen corresponding path program 1 times [2023-11-24 22:02:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:19,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439479809] [2023-11-24 22:02:19,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:19,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:19,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:19,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439479809] [2023-11-24 22:02:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439479809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:19,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:19,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:02:19,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524240304] [2023-11-24 22:02:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:19,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:02:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:19,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:02:19,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:02:19,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2023-11-24 22:02:19,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 819 flow. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:19,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:19,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2023-11-24 22:02:19,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:24,348 INFO L124 PetriNetUnfolderBase]: 18007/31114 cut-off events. [2023-11-24 22:02:24,349 INFO L125 PetriNetUnfolderBase]: For 84710/85965 co-relation queries the response was YES. [2023-11-24 22:02:24,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103773 conditions, 31114 events. 18007/31114 cut-off events. For 84710/85965 co-relation queries the response was YES. Maximal size of possible extension queue 2113. Compared 297630 event pairs, 6732 based on Foata normal form. 355/31156 useless extension candidates. Maximal degree in co-relation 103727. Up to 16738 conditions per place. [2023-11-24 22:02:24,726 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 92 selfloop transitions, 10 changer transitions 95/225 dead transitions. [2023-11-24 22:02:24,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 225 transitions, 2021 flow [2023-11-24 22:02:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:02:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:02:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2023-11-24 22:02:24,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2023-11-24 22:02:24,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 308 transitions. [2023-11-24 22:02:24,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 308 transitions. [2023-11-24 22:02:24,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:24,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 308 transitions. [2023-11-24 22:02:24,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:24,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:24,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:24,734 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 819 flow. Second operand 8 states and 308 transitions. [2023-11-24 22:02:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 225 transitions, 2021 flow [2023-11-24 22:02:25,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 225 transitions, 1897 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-24 22:02:25,597 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 790 flow [2023-11-24 22:02:25,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2023-11-24 22:02:25,597 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2023-11-24 22:02:25,597 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 790 flow [2023-11-24 22:02:25,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:25,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:25,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 22:02:25,598 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:25,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash 268866964, now seen corresponding path program 1 times [2023-11-24 22:02:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:25,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39524136] [2023-11-24 22:02:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39524136] [2023-11-24 22:02:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39524136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:02:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926303995] [2023-11-24 22:02:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:02:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:02:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:02:26,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 57 [2023-11-24 22:02:26,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:26,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:26,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 57 [2023-11-24 22:02:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:30,805 INFO L124 PetriNetUnfolderBase]: 10128/19926 cut-off events. [2023-11-24 22:02:30,805 INFO L125 PetriNetUnfolderBase]: For 62094/63643 co-relation queries the response was YES. [2023-11-24 22:02:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63991 conditions, 19926 events. 10128/19926 cut-off events. For 62094/63643 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 203907 event pairs, 7667 based on Foata normal form. 111/19444 useless extension candidates. Maximal degree in co-relation 63941. Up to 13743 conditions per place. [2023-11-24 22:02:31,146 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 63 selfloop transitions, 30 changer transitions 12/137 dead transitions. [2023-11-24 22:02:31,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 137 transitions, 1252 flow [2023-11-24 22:02:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:02:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 22:02:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2023-11-24 22:02:31,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2023-11-24 22:02:31,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 282 transitions. [2023-11-24 22:02:31,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 282 transitions. [2023-11-24 22:02:31,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:31,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 282 transitions. [2023-11-24 22:02:31,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:31,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:31,154 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:31,154 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 790 flow. Second operand 8 states and 282 transitions. [2023-11-24 22:02:31,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 137 transitions, 1252 flow [2023-11-24 22:02:31,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 1119 flow, removed 38 selfloop flow, removed 10 redundant places. [2023-11-24 22:02:31,933 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 819 flow [2023-11-24 22:02:31,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=819, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2023-11-24 22:02:31,934 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2023-11-24 22:02:31,935 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 819 flow [2023-11-24 22:02:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.77777777777778) internal successors, (259), 9 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:31,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:31,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:31,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 22:02:31,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 22:02:31,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1024441810, now seen corresponding path program 2 times [2023-11-24 22:02:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:02:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125300193] [2023-11-24 22:02:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:02:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:02:32,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:02:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125300193] [2023-11-24 22:02:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125300193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:32,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:02:32,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095474020] [2023-11-24 22:02:32,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:32,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:02:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:02:32,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:02:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:02:32,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2023-11-24 22:02:32,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 819 flow. Second operand has 10 states, 10 states have (on average 29.6) internal successors, (296), 10 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:02:32,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:32,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2023-11-24 22:02:32,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand