./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:18,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:18,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:24:18,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:18,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:18,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:18,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:18,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:18,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:18,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:18,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:18,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:18,343 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:18,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:18,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:18,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:18,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:18,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:18,347 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:24:18,347 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:24:18,348 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:24:18,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:18,349 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:24:18,349 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:18,350 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:18,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:18,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:18,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:18,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:18,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:18,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:18,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:18,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:18,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:18,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:18,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:18,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:18,355 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:18,356 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_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5babed9169ff1f82a919f6310b42a42108866edd5cf3c99389faf03347963192 [2023-11-12 02:24:18,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:18,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:18,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:18,725 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:18,726 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:18,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2023-11-12 02:24:21,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:22,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:22,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/sv-benchmarks/c/pthread-wmm/mix008_tso.oepc.i [2023-11-12 02:24:22,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/data/ced53813a/810aeca3bdd240f6aa79edf552b5b9cf/FLAGb72723b55 [2023-11-12 02:24:22,245 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/data/ced53813a/810aeca3bdd240f6aa79edf552b5b9cf [2023-11-12 02:24:22,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:22,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:22,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:22,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:22,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:22,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:22" (1/1) ... [2023-11-12 02:24:22,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dad49a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:22, skipping insertion in model container [2023-11-12 02:24:22,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:22" (1/1) ... [2023-11-12 02:24:22,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:22,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:22,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:23,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:23,176 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:23,176 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:24:23,213 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:23,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23 WrapperNode [2023-11-12 02:24:23,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:23,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:23,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:23,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:23,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,327 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 290 [2023-11-12 02:24:23,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:23,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:23,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:23,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:23,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:23,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:23,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:23,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:23,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (1/1) ... [2023-11-12 02:24:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:23,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:23,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b41e559-9a6d-49c0-b1c6-6ca5e0acf937/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:23,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:24:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:23,477 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:24:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:24:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:24:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:24:23,478 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:24:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:24:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:24:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:24:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:24:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:23,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:23,481 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:23,650 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:23,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:24,253 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:24,591 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:24,591 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:24:24,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:24 BoogieIcfgContainer [2023-11-12 02:24:24,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:24,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:24,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:24,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:24,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:22" (1/3) ... [2023-11-12 02:24:24,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e17eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:24, skipping insertion in model container [2023-11-12 02:24:24,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:23" (2/3) ... [2023-11-12 02:24:24,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e17eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:24, skipping insertion in model container [2023-11-12 02:24:24,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:24" (3/3) ... [2023-11-12 02:24:24,605 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2023-11-12 02:24:24,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:24,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:24:24,629 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:24,727 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:24:24,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 170 transitions, 356 flow [2023-11-12 02:24:24,877 INFO L124 PetriNetUnfolderBase]: 3/166 cut-off events. [2023-11-12 02:24:24,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:24,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 3/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:24:24,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 170 transitions, 356 flow [2023-11-12 02:24:24,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 166 transitions, 344 flow [2023-11-12 02:24:24,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:24,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 166 transitions, 344 flow [2023-11-12 02:24:24,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 166 transitions, 344 flow [2023-11-12 02:24:24,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 166 transitions, 344 flow [2023-11-12 02:24:25,001 INFO L124 PetriNetUnfolderBase]: 3/166 cut-off events. [2023-11-12 02:24:25,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:25,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 3/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 122 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-12 02:24:25,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 4118 [2023-11-12 02:24:33,797 INFO L134 LiptonReduction]: Checked pairs total: 11385 [2023-11-12 02:24:33,798 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-11-12 02:24:33,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:33,836 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;@25f64586, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:33,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:24:33,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:33,843 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:24:33,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:33,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:33,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:24:33,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:33,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash 885, now seen corresponding path program 1 times [2023-11-12 02:24:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123731063] [2023-11-12 02:24:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123731063] [2023-11-12 02:24:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123731063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:34,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:34,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:24:34,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762042053] [2023-11-12 02:24:34,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:34,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:24:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:24:34,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:24:34,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 330 [2023-11-12 02:24:34,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:34,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:34,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 330 [2023-11-12 02:24:34,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:37,791 INFO L124 PetriNetUnfolderBase]: 12445/16969 cut-off events. [2023-11-12 02:24:37,791 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-12 02:24:37,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33851 conditions, 16969 events. 12445/16969 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 93034 event pairs, 12445 based on Foata normal form. 504/14565 useless extension candidates. Maximal degree in co-relation 33839. Up to 16677 conditions per place. [2023-11-12 02:24:37,968 INFO L140 encePairwiseOnDemand]: 321/330 looper letters, 31 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2023-11-12 02:24:37,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 34 transitions, 142 flow [2023-11-12 02:24:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:24:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:24:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 340 transitions. [2023-11-12 02:24:37,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-12 02:24:37,996 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 340 transitions. [2023-11-12 02:24:37,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 340 transitions. [2023-11-12 02:24:38,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:38,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 340 transitions. [2023-11-12 02:24:38,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 170.0) internal successors, (340), 2 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,022 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,024 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 2 states and 340 transitions. [2023-11-12 02:24:38,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 34 transitions, 142 flow [2023-11-12 02:24:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:24:38,036 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2023-11-12 02:24:38,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-12 02:24:38,045 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2023-11-12 02:24:38,045 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2023-11-12 02:24:38,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:38,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:38,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:38,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:38,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1036051757, now seen corresponding path program 1 times [2023-11-12 02:24:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:38,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132758570] [2023-11-12 02:24:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:38,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132758570] [2023-11-12 02:24:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132758570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010770023] [2023-11-12 02:24:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:38,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:38,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 330 [2023-11-12 02:24:38,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:38,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:38,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 330 [2023-11-12 02:24:38,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:41,364 INFO L124 PetriNetUnfolderBase]: 10587/14271 cut-off events. [2023-11-12 02:24:41,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:41,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28668 conditions, 14271 events. 10587/14271 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 77234 event pairs, 2065 based on Foata normal form. 0/12383 useless extension candidates. Maximal degree in co-relation 28665. Up to 12291 conditions per place. [2023-11-12 02:24:41,474 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 47 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-12 02:24:41,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 212 flow [2023-11-12 02:24:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-11-12 02:24:41,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502020202020202 [2023-11-12 02:24:41,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-11-12 02:24:41,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-11-12 02:24:41,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:41,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-11-12 02:24:41,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:41,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:41,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:41,497 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 3 states and 497 transitions. [2023-11-12 02:24:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 212 flow [2023-11-12 02:24:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:41,500 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 78 flow [2023-11-12 02:24:41,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2023-11-12 02:24:41,502 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2023-11-12 02:24:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 78 flow [2023-11-12 02:24:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:41,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:41,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:41,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:41,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:41,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:41,505 INFO L85 PathProgramCache]: Analyzing trace with hash -786595436, now seen corresponding path program 1 times [2023-11-12 02:24:41,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798809003] [2023-11-12 02:24:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798809003] [2023-11-12 02:24:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798809003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:41,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:41,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:41,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050127868] [2023-11-12 02:24:41,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:41,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:41,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 330 [2023-11-12 02:24:41,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 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) [2023-11-12 02:24:41,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:41,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 330 [2023-11-12 02:24:41,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:44,380 INFO L124 PetriNetUnfolderBase]: 8787/12423 cut-off events. [2023-11-12 02:24:44,380 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2023-11-12 02:24:44,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24950 conditions, 12423 events. 8787/12423 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 70991 event pairs, 1587 based on Foata normal form. 0/11339 useless extension candidates. Maximal degree in co-relation 24946. Up to 9505 conditions per place. [2023-11-12 02:24:44,464 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 40 selfloop transitions, 2 changer transitions 4/49 dead transitions. [2023-11-12 02:24:44,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 204 flow [2023-11-12 02:24:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:44,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-11-12 02:24:44,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498989898989899 [2023-11-12 02:24:44,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-11-12 02:24:44,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-11-12 02:24:44,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:44,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-11-12 02:24:44,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:44,477 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 494 transitions. [2023-11-12 02:24:44,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 204 flow [2023-11-12 02:24:44,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:44,484 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 72 flow [2023-11-12 02:24:44,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-11-12 02:24:44,486 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2023-11-12 02:24:44,487 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 72 flow [2023-11-12 02:24:44,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 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) [2023-11-12 02:24:44,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:44,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:44,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:24:44,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:44,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -119369892, now seen corresponding path program 1 times [2023-11-12 02:24:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:44,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999907659] [2023-11-12 02:24:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999907659] [2023-11-12 02:24:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999907659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:45,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:24:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692503150] [2023-11-12 02:24:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:24:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:24:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:46,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 330 [2023-11-12 02:24:46,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 133.71428571428572) internal successors, (936), 7 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:46,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:46,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 330 [2023-11-12 02:24:46,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:47,460 INFO L124 PetriNetUnfolderBase]: 5493/7832 cut-off events. [2023-11-12 02:24:47,461 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-11-12 02:24:47,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15841 conditions, 7832 events. 5493/7832 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 42442 event pairs, 324 based on Foata normal form. 0/7832 useless extension candidates. Maximal degree in co-relation 15837. Up to 4374 conditions per place. [2023-11-12 02:24:47,513 INFO L140 encePairwiseOnDemand]: 324/330 looper letters, 52 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-12 02:24:47,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 246 flow [2023-11-12 02:24:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:24:47,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:24:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 983 transitions. [2023-11-12 02:24:47,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42554112554112555 [2023-11-12 02:24:47,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 983 transitions. [2023-11-12 02:24:47,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 983 transitions. [2023-11-12 02:24:47,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:47,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 983 transitions. [2023-11-12 02:24:47,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.42857142857142) internal successors, (983), 7 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:47,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:47,532 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:47,532 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 72 flow. Second operand 7 states and 983 transitions. [2023-11-12 02:24:47,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 246 flow [2023-11-12 02:24:47,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:47,549 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 76 flow [2023-11-12 02:24:47,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-12 02:24:47,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2023-11-12 02:24:47,552 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 76 flow [2023-11-12 02:24:47,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.71428571428572) internal successors, (936), 7 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:47,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:47,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:47,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:24:47,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:47,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -119369914, now seen corresponding path program 1 times [2023-11-12 02:24:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:47,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408514491] [2023-11-12 02:24:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408514491] [2023-11-12 02:24:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408514491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090019410] [2023-11-12 02:24:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:48,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 330 [2023-11-12 02:24:48,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:48,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:48,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 330 [2023-11-12 02:24:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:51,126 INFO L124 PetriNetUnfolderBase]: 12215/16739 cut-off events. [2023-11-12 02:24:51,126 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2023-11-12 02:24:51,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34630 conditions, 16739 events. 12215/16739 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 89232 event pairs, 2199 based on Foata normal form. 768/17503 useless extension candidates. Maximal degree in co-relation 34626. Up to 9377 conditions per place. [2023-11-12 02:24:51,211 INFO L140 encePairwiseOnDemand]: 317/330 looper letters, 49 selfloop transitions, 11 changer transitions 41/102 dead transitions. [2023-11-12 02:24:51,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 102 transitions, 442 flow [2023-11-12 02:24:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:24:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:24:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1056 transitions. [2023-11-12 02:24:51,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2023-11-12 02:24:51,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1056 transitions. [2023-11-12 02:24:51,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1056 transitions. [2023-11-12 02:24:51,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:51,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1056 transitions. [2023-11-12 02:24:51,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,229 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 76 flow. Second operand 7 states and 1056 transitions. [2023-11-12 02:24:51,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 102 transitions, 442 flow [2023-11-12 02:24:51,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 102 transitions, 424 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:24:51,234 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 174 flow [2023-11-12 02:24:51,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-11-12 02:24:51,235 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2023-11-12 02:24:51,236 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 174 flow [2023-11-12 02:24:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:51,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:51,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:51,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:51,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 410247602, now seen corresponding path program 1 times [2023-11-12 02:24:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564901118] [2023-11-12 02:24:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564901118] [2023-11-12 02:24:51,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564901118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:51,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:51,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054670576] [2023-11-12 02:24:51,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:51,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:52,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 330 [2023-11-12 02:24:52,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:52,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:52,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 330 [2023-11-12 02:24:52,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:54,733 INFO L124 PetriNetUnfolderBase]: 10871/15011 cut-off events. [2023-11-12 02:24:54,734 INFO L125 PetriNetUnfolderBase]: For 14170/14170 co-relation queries the response was YES. [2023-11-12 02:24:54,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47244 conditions, 15011 events. 10871/15011 cut-off events. For 14170/14170 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 77524 event pairs, 2551 based on Foata normal form. 576/15583 useless extension candidates. Maximal degree in co-relation 47235. Up to 7873 conditions per place. [2023-11-12 02:24:54,998 INFO L140 encePairwiseOnDemand]: 316/330 looper letters, 50 selfloop transitions, 19 changer transitions 39/109 dead transitions. [2023-11-12 02:24:54,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 109 transitions, 712 flow [2023-11-12 02:24:54,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:24:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:24:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1045 transitions. [2023-11-12 02:24:55,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-11-12 02:24:55,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1045 transitions. [2023-11-12 02:24:55,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1045 transitions. [2023-11-12 02:24:55,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:55,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1045 transitions. [2023-11-12 02:24:55,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.28571428571428) internal successors, (1045), 7 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,017 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,017 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 174 flow. Second operand 7 states and 1045 transitions. [2023-11-12 02:24:55,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 109 transitions, 712 flow [2023-11-12 02:24:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 109 transitions, 700 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:55,260 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 367 flow [2023-11-12 02:24:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-12 02:24:55,261 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-11-12 02:24:55,262 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 367 flow [2023-11-12 02:24:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:55,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:55,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:55,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:24:55,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:55,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1248875386, now seen corresponding path program 1 times [2023-11-12 02:24:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:55,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33184010] [2023-11-12 02:24:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33184010] [2023-11-12 02:24:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33184010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:56,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:56,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76422335] [2023-11-12 02:24:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:56,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 330 [2023-11-12 02:24:56,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:56,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:56,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 330 [2023-11-12 02:24:56,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:59,160 INFO L124 PetriNetUnfolderBase]: 10298/14585 cut-off events. [2023-11-12 02:24:59,160 INFO L125 PetriNetUnfolderBase]: For 32123/32123 co-relation queries the response was YES. [2023-11-12 02:24:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54795 conditions, 14585 events. 10298/14585 cut-off events. For 32123/32123 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 79889 event pairs, 1849 based on Foata normal form. 382/14967 useless extension candidates. Maximal degree in co-relation 54781. Up to 9891 conditions per place. [2023-11-12 02:24:59,275 INFO L140 encePairwiseOnDemand]: 316/330 looper letters, 56 selfloop transitions, 36 changer transitions 32/125 dead transitions. [2023-11-12 02:24:59,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 125 transitions, 1015 flow [2023-11-12 02:24:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:24:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:24:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1057 transitions. [2023-11-12 02:24:59,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575757575757576 [2023-11-12 02:24:59,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1057 transitions. [2023-11-12 02:24:59,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1057 transitions. [2023-11-12 02:24:59,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:59,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1057 transitions. [2023-11-12 02:24:59,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,302 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,303 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 367 flow. Second operand 7 states and 1057 transitions. [2023-11-12 02:24:59,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 125 transitions, 1015 flow [2023-11-12 02:24:59,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 125 transitions, 990 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-12 02:24:59,658 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 571 flow [2023-11-12 02:24:59,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=571, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-11-12 02:24:59,660 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-11-12 02:24:59,660 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 571 flow [2023-11-12 02:24:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:59,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:59,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:24:59,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:24:59,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 60360579, now seen corresponding path program 1 times [2023-11-12 02:24:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910207870] [2023-11-12 02:24:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:00,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:00,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910207870] [2023-11-12 02:25:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910207870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:00,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:00,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:00,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483497179] [2023-11-12 02:25:00,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:00,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:00,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:00,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:00,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:00,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 330 [2023-11-12 02:25:00,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:00,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:00,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 330 [2023-11-12 02:25:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:01,637 INFO L124 PetriNetUnfolderBase]: 5854/8317 cut-off events. [2023-11-12 02:25:01,637 INFO L125 PetriNetUnfolderBase]: For 30366/31502 co-relation queries the response was YES. [2023-11-12 02:25:01,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36641 conditions, 8317 events. 5854/8317 cut-off events. For 30366/31502 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43769 event pairs, 1249 based on Foata normal form. 490/8594 useless extension candidates. Maximal degree in co-relation 36623. Up to 6950 conditions per place. [2023-11-12 02:25:01,704 INFO L140 encePairwiseOnDemand]: 324/330 looper letters, 87 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-11-12 02:25:01,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 104 transitions, 1105 flow [2023-11-12 02:25:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-11-12 02:25:01,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868686868686869 [2023-11-12 02:25:01,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-11-12 02:25:01,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-11-12 02:25:01,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:01,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-11-12 02:25:01,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,713 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 571 flow. Second operand 3 states and 482 transitions. [2023-11-12 02:25:01,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 104 transitions, 1105 flow [2023-11-12 02:25:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 1079 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-12 02:25:01,795 INFO L231 Difference]: Finished difference. Result has 59 places, 67 transitions, 586 flow [2023-11-12 02:25:01,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=59, PETRI_TRANSITIONS=67} [2023-11-12 02:25:01,796 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-11-12 02:25:01,796 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 67 transitions, 586 flow [2023-11-12 02:25:01,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:01,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:01,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:01,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:01,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:25:01,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash -498388411, now seen corresponding path program 1 times [2023-11-12 02:25:01,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:01,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254691444] [2023-11-12 02:25:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:01,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:02,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:02,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254691444] [2023-11-12 02:25:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254691444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:02,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668699815] [2023-11-12 02:25:02,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:02,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:02,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 330 [2023-11-12 02:25:02,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 67 transitions, 586 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:02,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:02,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 330 [2023-11-12 02:25:02,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:04,889 INFO L124 PetriNetUnfolderBase]: 8007/11596 cut-off events. [2023-11-12 02:25:04,889 INFO L125 PetriNetUnfolderBase]: For 32937/32937 co-relation queries the response was YES. [2023-11-12 02:25:04,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52678 conditions, 11596 events. 8007/11596 cut-off events. For 32937/32937 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 63572 event pairs, 2908 based on Foata normal form. 170/11766 useless extension candidates. Maximal degree in co-relation 52663. Up to 5696 conditions per place. [2023-11-12 02:25:04,951 INFO L140 encePairwiseOnDemand]: 323/330 looper letters, 80 selfloop transitions, 15 changer transitions 27/123 dead transitions. [2023-11-12 02:25:04,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 123 transitions, 1150 flow [2023-11-12 02:25:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-11-12 02:25:04,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454040404040404 [2023-11-12 02:25:04,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-11-12 02:25:04,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-11-12 02:25:04,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:04,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-11-12 02:25:04,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 330.0) internal successors, (2310), 7 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,968 INFO L175 Difference]: Start difference. First operand has 59 places, 67 transitions, 586 flow. Second operand 6 states and 899 transitions. [2023-11-12 02:25:04,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 123 transitions, 1150 flow [2023-11-12 02:25:04,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 1141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:04,992 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 612 flow [2023-11-12 02:25:04,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-11-12 02:25:04,993 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-11-12 02:25:04,993 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 612 flow [2023-11-12 02:25:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:04,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:04,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:04,996 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:25:04,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1185301480, now seen corresponding path program 1 times [2023-11-12 02:25:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:05,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799280643] [2023-11-12 02:25:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:05,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:05,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799280643] [2023-11-12 02:25:05,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799280643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:05,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:25:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588312777] [2023-11-12 02:25:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:25:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:25:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:25:05,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 330 [2023-11-12 02:25:05,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 612 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:05,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:05,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 330 [2023-11-12 02:25:05,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:06,366 INFO L124 PetriNetUnfolderBase]: 2968/4527 cut-off events. [2023-11-12 02:25:06,366 INFO L125 PetriNetUnfolderBase]: For 16897/17360 co-relation queries the response was YES. [2023-11-12 02:25:06,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21123 conditions, 4527 events. 2968/4527 cut-off events. For 16897/17360 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 24132 event pairs, 609 based on Foata normal form. 469/4916 useless extension candidates. Maximal degree in co-relation 21104. Up to 2146 conditions per place. [2023-11-12 02:25:06,407 INFO L140 encePairwiseOnDemand]: 324/330 looper letters, 108 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2023-11-12 02:25:06,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 127 transitions, 1408 flow [2023-11-12 02:25:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:25:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:25:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-11-12 02:25:06,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2023-11-12 02:25:06,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-11-12 02:25:06,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-11-12 02:25:06,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:06,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-11-12 02:25:06,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,420 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,420 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 612 flow. Second operand 4 states and 645 transitions. [2023-11-12 02:25:06,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 127 transitions, 1408 flow [2023-11-12 02:25:06,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 1384 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:06,464 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 631 flow [2023-11-12 02:25:06,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=631, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-11-12 02:25:06,468 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-11-12 02:25:06,469 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 631 flow [2023-11-12 02:25:06,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:06,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:25:06,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:06,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:25:06,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1735215777, now seen corresponding path program 1 times [2023-11-12 02:25:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:06,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812071358] [2023-11-12 02:25:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:06,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812071358] [2023-11-12 02:25:06,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812071358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:06,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:25:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229481154] [2023-11-12 02:25:06,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:06,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:06,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 330 [2023-11-12 02:25:06,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 631 flow. Second operand has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:06,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:06,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 330 [2023-11-12 02:25:06,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand