./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:44,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:44,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:48:44,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:44,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:44,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:44,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:44,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:44,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:44,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:44,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:44,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:44,369 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:44,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:44,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:44,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:44,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:44,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:44,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:48:44,373 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:48:44,373 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:48:44,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:44,374 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:48:44,374 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:44,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:44,375 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:44,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:44,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:44,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:44,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:44,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:44,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:44,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:44,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:44,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:44,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:44,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:44,381 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:44,381 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_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2023-11-19 07:48:44,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:44,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:44,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:44,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:44,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:44,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/triangular-1.i [2023-11-19 07:48:48,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:48,270 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:48,271 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/sv-benchmarks/c/pthread/triangular-1.i [2023-11-19 07:48:48,288 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/data/0e3939bba/ad44c0b1593744288c7787999b0ca491/FLAG7a01983ea [2023-11-19 07:48:48,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/data/0e3939bba/ad44c0b1593744288c7787999b0ca491 [2023-11-19 07:48:48,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:48,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:48,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:48,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:48,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:48,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:48,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d59bc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48, skipping insertion in model container [2023-11-19 07:48:48,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:48,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:48,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:48,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:48,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:48,949 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:48,949 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:48,956 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:48,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48 WrapperNode [2023-11-19 07:48:48,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:48,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:48,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:48,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:48,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,031 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-19 07:48:49,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:49,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:49,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:49,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:49,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:49,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:49,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:49,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:49,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (1/1) ... [2023-11-19 07:48:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:49,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:49,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:49,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:49,144 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:48:49,145 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:48:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:48:49,145 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:48:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:49,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:49,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:49,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:49,149 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:49,320 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:49,325 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:49,510 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:49,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:49,520 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:48:49,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:49 BoogieIcfgContainer [2023-11-19 07:48:49,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:49,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:49,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:49,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:49,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:48" (1/3) ... [2023-11-19 07:48:49,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a36330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:49, skipping insertion in model container [2023-11-19 07:48:49,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:48" (2/3) ... [2023-11-19 07:48:49,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a36330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:49, skipping insertion in model container [2023-11-19 07:48:49,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:49" (3/3) ... [2023-11-19 07:48:49,533 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-19 07:48:49,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:49,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:48:49,553 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:49,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:48:49,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 07:48:49,698 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 07:48:49,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:49,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 07:48:49,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-19 07:48:49,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-19 07:48:49,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:49,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 07:48:49,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-19 07:48:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-19 07:48:49,791 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-19 07:48:49,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:49,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-19 07:48:49,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-19 07:48:52,865 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-19 07:48:52,865 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-19 07:48:52,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:52,909 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;@30a802ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:52,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:48:52,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:52,912 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:48:52,912 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:52,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:52,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:48:52,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:52,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:52,927 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-19 07:48:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473006652] [2023-11-19 07:48:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473006652] [2023-11-19 07:48:53,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473006652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:53,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:53,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:48:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316118455] [2023-11-19 07:48:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:53,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:53,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-19 07:48:53,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:53,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-19 07:48:53,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:53,211 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-19 07:48:53,212 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:53,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-19 07:48:53,217 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-19 07:48:53,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-19 07:48:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:48:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-19 07:48:53,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-19 07:48:53,236 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-19 07:48:53,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-19 07:48:53,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:53,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-19 07:48:53,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,257 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,259 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-19 07:48:53,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-19 07:48:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:53,264 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-19 07:48:53,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-19 07:48:53,272 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 07:48:53,272 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-19 07:48:53,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:53,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:53,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:53,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:53,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-19 07:48:53,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:53,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110938582] [2023-11-19 07:48:53,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:53,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110938582] [2023-11-19 07:48:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110938582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:53,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81126421] [2023-11-19 07:48:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:53,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:53,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:53,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:53,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:53,607 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-19 07:48:53,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-11-19 07:48:53,610 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 07:48:53,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-19 07:48:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-19 07:48:53,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-19 07:48:53,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-19 07:48:53,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-19 07:48:53,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:53,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-19 07:48:53,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,618 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,618 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-19 07:48:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-19 07:48:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:53,620 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-19 07:48:53,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-19 07:48:53,621 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-19 07:48:53,621 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-19 07:48:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:53,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:48:53,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:53,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:53,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:53,623 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-19 07:48:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917247147] [2023-11-19 07:48:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:53,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:53,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:53,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917247147] [2023-11-19 07:48:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917247147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:53,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:48:53,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299805473] [2023-11-19 07:48:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:53,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 07:48:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 07:48:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:53,900 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-19 07:48:53,900 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:48:53,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-11-19 07:48:53,903 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-19 07:48:53,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-19 07:48:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-19 07:48:53,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-19 07:48:53,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-19 07:48:53,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-19 07:48:53,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:53,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-19 07:48:53,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,911 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-19 07:48:53,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-19 07:48:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:53,912 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-19 07:48:53,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-19 07:48:53,913 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-19 07:48:53,914 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-19 07:48:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:53,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:53,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:48:53,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:53,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:53,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:53,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-19 07:48:53,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011558328] [2023-11-19 07:48:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:54,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011558328] [2023-11-19 07:48:54,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011558328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:54,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:54,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453023585] [2023-11-19 07:48:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:54,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-19 07:48:54,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:54,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-19 07:48:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:54,252 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-19 07:48:54,252 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:48:54,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-11-19 07:48:54,256 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-19 07:48:54,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-19 07:48:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-19 07:48:54,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-19 07:48:54,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-19 07:48:54,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-19 07:48:54,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:54,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-19 07:48:54,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,265 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,266 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-19 07:48:54,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-19 07:48:54,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:54,269 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-19 07:48:54,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-19 07:48:54,270 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-19 07:48:54,270 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-19 07:48:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:54,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:54,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:54,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-19 07:48:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100621443] [2023-11-19 07:48:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:54,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:54,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100621443] [2023-11-19 07:48:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100621443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073267905] [2023-11-19 07:48:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:54,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:54,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-19 07:48:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-19 07:48:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:54,708 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-19 07:48:54,708 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-19 07:48:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-11-19 07:48:54,711 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-19 07:48:54,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-19 07:48:54,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:48:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-19 07:48:54,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-19 07:48:54,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-19 07:48:54,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-19 07:48:54,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:54,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-19 07:48:54,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,719 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,719 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-19 07:48:54,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-19 07:48:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:54,723 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-19 07:48:54,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-19 07:48:54,724 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-19 07:48:54,724 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-19 07:48:54,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:54,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:54,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:54,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-19 07:48:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:54,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181410513] [2023-11-19 07:48:54,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:54,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181410513] [2023-11-19 07:48:54,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181410513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:54,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:54,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892054812] [2023-11-19 07:48:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:54,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:54,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:54,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:54,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:54,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:54,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:54,997 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-19 07:48:54,997 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-19 07:48:54,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-11-19 07:48:55,000 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-19 07:48:55,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-19 07:48:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:48:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-19 07:48:55,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-19 07:48:55,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-19 07:48:55,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-19 07:48:55,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:55,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-19 07:48:55,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,008 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,008 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-19 07:48:55,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-19 07:48:55,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:55,012 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-19 07:48:55,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-19 07:48:55,015 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-19 07:48:55,016 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-19 07:48:55,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:55,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:48:55,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:55,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-19 07:48:55,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878360797] [2023-11-19 07:48:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878360797] [2023-11-19 07:48:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878360797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935441175] [2023-11-19 07:48:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:55,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:55,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:55,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:55,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:55,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:55,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:55,320 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-19 07:48:55,320 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-19 07:48:55,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-11-19 07:48:55,323 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-19 07:48:55,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-19 07:48:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-19 07:48:55,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-19 07:48:55,326 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-19 07:48:55,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-19 07:48:55,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:55,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-19 07:48:55,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,332 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,332 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-19 07:48:55,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-19 07:48:55,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:55,336 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-19 07:48:55,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-19 07:48:55,337 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-19 07:48:55,338 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-19 07:48:55,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:55,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:55,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:55,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-19 07:48:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435954334] [2023-11-19 07:48:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:55,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:55,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435954334] [2023-11-19 07:48:55,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435954334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:55,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:55,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:55,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956119025] [2023-11-19 07:48:55,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:55,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:55,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:55,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:55,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:55,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:55,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:55,574 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-19 07:48:55,574 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-19 07:48:55,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 762. Up to 84 conditions per place. [2023-11-19 07:48:55,577 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-11-19 07:48:55,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-11-19 07:48:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-19 07:48:55,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407185628742515 [2023-11-19 07:48:55,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-19 07:48:55,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-19 07:48:55,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:55,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-19 07:48:55,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,584 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 368 transitions. [2023-11-19 07:48:55,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-11-19 07:48:55,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:55,595 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-11-19 07:48:55,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-19 07:48:55,599 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-11-19 07:48:55,599 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-11-19 07:48:55,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:55,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:48:55,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:55,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-19 07:48:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811726928] [2023-11-19 07:48:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:55,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:55,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811726928] [2023-11-19 07:48:55,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811726928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:55,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:55,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:55,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619067993] [2023-11-19 07:48:55,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:55,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:55,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:55,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:55,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:55,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:55,916 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-19 07:48:55,916 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-19 07:48:55,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 263 events. 150/263 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 864 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1079. Up to 73 conditions per place. [2023-11-19 07:48:55,920 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-11-19 07:48:55,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-11-19 07:48:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:48:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-19 07:48:55,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-19 07:48:55,923 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-19 07:48:55,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-19 07:48:55,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:55,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-19 07:48:55,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,929 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,929 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 582 transitions. [2023-11-19 07:48:55,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-11-19 07:48:55,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:55,935 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-11-19 07:48:55,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-19 07:48:55,937 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-11-19 07:48:55,937 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-11-19 07:48:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:55,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:55,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:48:55,938 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:55,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-19 07:48:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356683294] [2023-11-19 07:48:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356683294] [2023-11-19 07:48:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356683294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387927167] [2023-11-19 07:48:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:56,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:56,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:56,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:56,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:56,247 INFO L124 PetriNetUnfolderBase]: 138/243 cut-off events. [2023-11-19 07:48:56,247 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-11-19 07:48:56,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 243 events. 138/243 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 808 event pairs, 20 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 1131. Up to 69 conditions per place. [2023-11-19 07:48:56,250 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-11-19 07:48:56,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 553 flow [2023-11-19 07:48:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2023-11-19 07:48:56,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354148845166809 [2023-11-19 07:48:56,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2023-11-19 07:48:56,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2023-11-19 07:48:56,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:56,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2023-11-19 07:48:56,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,260 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,260 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 7 states and 509 transitions. [2023-11-19 07:48:56,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 553 flow [2023-11-19 07:48:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 502 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:56,268 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 361 flow [2023-11-19 07:48:56,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2023-11-19 07:48:56,270 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-11-19 07:48:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 361 flow [2023-11-19 07:48:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:56,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:48:56,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:56,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1548197216, now seen corresponding path program 3 times [2023-11-19 07:48:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793026998] [2023-11-19 07:48:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:56,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793026998] [2023-11-19 07:48:56,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793026998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:56,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:56,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604215583] [2023-11-19 07:48:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:56,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:56,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:56,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:56,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:56,627 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-19 07:48:56,627 INFO L125 PetriNetUnfolderBase]: For 1621/1621 co-relation queries the response was YES. [2023-11-19 07:48:56,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 283 events. 160/283 cut-off events. For 1621/1621 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1014 event pairs, 45 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 1344. Up to 145 conditions per place. [2023-11-19 07:48:56,630 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 37 selfloop transitions, 16 changer transitions 8/61 dead transitions. [2023-11-19 07:48:56,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 641 flow [2023-11-19 07:48:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:48:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 510 transitions. [2023-11-19 07:48:56,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43627031650983744 [2023-11-19 07:48:56,634 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 510 transitions. [2023-11-19 07:48:56,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 510 transitions. [2023-11-19 07:48:56,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:56,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 510 transitions. [2023-11-19 07:48:56,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.85714285714286) internal successors, (510), 7 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 167.0) internal successors, (1336), 8 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,640 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 361 flow. Second operand 7 states and 510 transitions. [2023-11-19 07:48:56,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 641 flow [2023-11-19 07:48:56,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 589 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-19 07:48:56,652 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 430 flow [2023-11-19 07:48:56,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-11-19 07:48:56,654 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 34 predicate places. [2023-11-19 07:48:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 430 flow [2023-11-19 07:48:56,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:56,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:56,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:48:56,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:56,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash 753970516, now seen corresponding path program 4 times [2023-11-19 07:48:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:56,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097755059] [2023-11-19 07:48:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:56,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:56,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097755059] [2023-11-19 07:48:56,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097755059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088559537] [2023-11-19 07:48:56,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:48:56,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:56,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:48:56,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:48:56,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:56,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:56,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:57,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:57,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088559537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:57,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:57,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-19 07:48:57,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834780896] [2023-11-19 07:48:57,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:57,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:48:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:57,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:48:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:48:57,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:57,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:57,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:57,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:57,503 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-19 07:48:57,503 INFO L125 PetriNetUnfolderBase]: For 2527/2527 co-relation queries the response was YES. [2023-11-19 07:48:57,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 363 events. 208/363 cut-off events. For 2527/2527 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1252 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1810. Up to 94 conditions per place. [2023-11-19 07:48:57,507 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-19 07:48:57,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 1020 flow [2023-11-19 07:48:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:48:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-19 07:48:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1012 transitions. [2023-11-19 07:48:57,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328485885372113 [2023-11-19 07:48:57,512 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1012 transitions. [2023-11-19 07:48:57,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1012 transitions. [2023-11-19 07:48:57,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:57,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1012 transitions. [2023-11-19 07:48:57,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 72.28571428571429) internal successors, (1012), 14 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,522 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 167.0) internal successors, (2505), 15 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,522 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 430 flow. Second operand 14 states and 1012 transitions. [2023-11-19 07:48:57,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 1020 flow [2023-11-19 07:48:57,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 995 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 07:48:57,535 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 771 flow [2023-11-19 07:48:57,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=771, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2023-11-19 07:48:57,536 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2023-11-19 07:48:57,537 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 771 flow [2023-11-19 07:48:57,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:57,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:57,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:48:57,759 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1864557189, now seen corresponding path program 5 times [2023-11-19 07:48:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283001256] [2023-11-19 07:48:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:57,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:57,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283001256] [2023-11-19 07:48:57,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283001256] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:57,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280984263] [2023-11-19 07:48:57,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:48:57,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:57,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:57,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:48:58,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 07:48:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:58,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:48:58,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:58,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280984263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:58,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 07:48:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994750569] [2023-11-19 07:48:58,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:58,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:48:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:48:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:48:58,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:58,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 771 flow. Second operand has 16 states, 16 states have (on average 68.8125) internal successors, (1101), 16 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:58,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:58,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:58,750 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-19 07:48:58,750 INFO L125 PetriNetUnfolderBase]: For 5898/5898 co-relation queries the response was YES. [2023-11-19 07:48:58,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 475 events. 264/475 cut-off events. For 5898/5898 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1735 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2704. Up to 249 conditions per place. [2023-11-19 07:48:58,755 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-19 07:48:58,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 1589 flow [2023-11-19 07:48:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:48:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-19 07:48:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1155 transitions. [2023-11-19 07:48:58,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43226047904191617 [2023-11-19 07:48:58,761 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1155 transitions. [2023-11-19 07:48:58,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1155 transitions. [2023-11-19 07:48:58,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:58,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1155 transitions. [2023-11-19 07:48:58,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.1875) internal successors, (1155), 16 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,774 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 167.0) internal successors, (2839), 17 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,774 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 771 flow. Second operand 16 states and 1155 transitions. [2023-11-19 07:48:58,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 1589 flow [2023-11-19 07:48:58,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 1210 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-11-19 07:48:58,816 INFO L231 Difference]: Finished difference. Result has 94 places, 71 transitions, 859 flow [2023-11-19 07:48:58,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=859, PETRI_PLACES=94, PETRI_TRANSITIONS=71} [2023-11-19 07:48:58,817 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2023-11-19 07:48:58,817 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 71 transitions, 859 flow [2023-11-19 07:48:58,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.8125) internal successors, (1101), 16 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:58,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:58,819 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:58,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:48:59,040 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:48:59,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1956727319, now seen corresponding path program 6 times [2023-11-19 07:48:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:59,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771925641] [2023-11-19 07:48:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:59,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771925641] [2023-11-19 07:48:59,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771925641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:59,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109494290] [2023-11-19 07:48:59,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:48:59,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:59,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:48:59,374 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-19 07:48:59,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:59,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:48:59,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:59,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:48:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109494290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:59,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:48:59,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:48:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686587208] [2023-11-19 07:48:59,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:59,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:48:59,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:48:59,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:48:59,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:48:59,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 71 transitions, 859 flow. Second operand has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:59,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:59,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:48:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:00,379 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-19 07:49:00,379 INFO L125 PetriNetUnfolderBase]: For 15385/15385 co-relation queries the response was YES. [2023-11-19 07:49:00,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 767 events. 418/767 cut-off events. For 15385/15385 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3414 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4384. Up to 236 conditions per place. [2023-11-19 07:49:00,388 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-19 07:49:00,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 2249 flow [2023-11-19 07:49:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:49:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-19 07:49:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1588 transitions. [2023-11-19 07:49:00,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432226456178552 [2023-11-19 07:49:00,398 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1588 transitions. [2023-11-19 07:49:00,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1588 transitions. [2023-11-19 07:49:00,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:00,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1588 transitions. [2023-11-19 07:49:00,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 72.18181818181819) internal successors, (1588), 22 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,416 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,416 INFO L175 Difference]: Start difference. First operand has 94 places, 71 transitions, 859 flow. Second operand 22 states and 1588 transitions. [2023-11-19 07:49:00,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 2249 flow [2023-11-19 07:49:00,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 183 transitions, 2134 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:00,468 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 1606 flow [2023-11-19 07:49:00,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1606, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2023-11-19 07:49:00,469 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 101 predicate places. [2023-11-19 07:49:00,470 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 1606 flow [2023-11-19 07:49:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:00,471 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:00,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:49:00,693 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:49:00,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1244423045, now seen corresponding path program 7 times [2023-11-19 07:49:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281194343] [2023-11-19 07:49:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281194343] [2023-11-19 07:49:00,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281194343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549189737] [2023-11-19 07:49:00,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:49:00,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:00,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:00,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:00,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:49:00,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:00,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549189737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:01,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-19 07:49:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967189278] [2023-11-19 07:49:01,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:01,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:49:01,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:49:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:49:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:49:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 1606 flow. Second operand has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:01,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:49:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:02,015 INFO L124 PetriNetUnfolderBase]: 582/1047 cut-off events. [2023-11-19 07:49:02,016 INFO L125 PetriNetUnfolderBase]: For 39499/39499 co-relation queries the response was YES. [2023-11-19 07:49:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 1047 events. 582/1047 cut-off events. For 39499/39499 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4907 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7750. Up to 336 conditions per place. [2023-11-19 07:49:02,066 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2023-11-19 07:49:02,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 238 transitions, 3866 flow [2023-11-19 07:49:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 07:49:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-19 07:49:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1949 transitions. [2023-11-19 07:49:02,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322466178753604 [2023-11-19 07:49:02,073 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1949 transitions. [2023-11-19 07:49:02,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1949 transitions. [2023-11-19 07:49:02,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:02,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1949 transitions. [2023-11-19 07:49:02,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 72.18518518518519) internal successors, (1949), 27 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 167.0) internal successors, (4676), 28 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,090 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 167.0) internal successors, (4676), 28 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,091 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 1606 flow. Second operand 27 states and 1949 transitions. [2023-11-19 07:49:02,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 238 transitions, 3866 flow [2023-11-19 07:49:02,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 238 transitions, 3511 flow, removed 169 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:02,220 INFO L231 Difference]: Finished difference. Result has 162 places, 151 transitions, 2634 flow [2023-11-19 07:49:02,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2634, PETRI_PLACES=162, PETRI_TRANSITIONS=151} [2023-11-19 07:49:02,221 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 138 predicate places. [2023-11-19 07:49:02,221 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 151 transitions, 2634 flow [2023-11-19 07:49:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 68.76470588235294) internal successors, (1169), 17 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:02,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:02,222 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:02,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:02,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:49:02,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:49:02,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1719251139, now seen corresponding path program 8 times [2023-11-19 07:49:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:02,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215374180] [2023-11-19 07:49:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:02,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215374180] [2023-11-19 07:49:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215374180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302286993] [2023-11-19 07:49:02,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:49:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:02,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:02,650 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:02,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:49:02,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:49:02,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:02,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:49:02,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:02,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:03,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302286993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:03,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:03,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-19 07:49:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090637414] [2023-11-19 07:49:03,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:49:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:49:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:49:03,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-19 07:49:03,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 151 transitions, 2634 flow. Second operand has 24 states, 24 states have (on average 68.45833333333333) internal successors, (1643), 24 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:03,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-19 07:49:03,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:04,034 INFO L124 PetriNetUnfolderBase]: 682/1223 cut-off events. [2023-11-19 07:49:04,034 INFO L125 PetriNetUnfolderBase]: For 64653/64653 co-relation queries the response was YES. [2023-11-19 07:49:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11202 conditions, 1223 events. 682/1223 cut-off events. For 64653/64653 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5771 event pairs, 27 based on Foata normal form. 12/1235 useless extension candidates. Maximal degree in co-relation 11133. Up to 397 conditions per place. [2023-11-19 07:49:04,054 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 72 selfloop transitions, 141 changer transitions 40/253 dead transitions. [2023-11-19 07:49:04,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 253 transitions, 5084 flow [2023-11-19 07:49:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:49:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-19 07:49:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1801 transitions. [2023-11-19 07:49:04,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137724550898204 [2023-11-19 07:49:04,059 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1801 transitions. [2023-11-19 07:49:04,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1801 transitions. [2023-11-19 07:49:04,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:04,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1801 transitions. [2023-11-19 07:49:04,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 72.04) internal successors, (1801), 25 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 167.0) internal successors, (4342), 26 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,075 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 167.0) internal successors, (4342), 26 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,075 INFO L175 Difference]: Start difference. First operand has 162 places, 151 transitions, 2634 flow. Second operand 25 states and 1801 transitions. [2023-11-19 07:49:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 253 transitions, 5084 flow [2023-11-19 07:49:04,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 253 transitions, 3871 flow, removed 581 selfloop flow, removed 10 redundant places. [2023-11-19 07:49:04,373 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 2971 flow [2023-11-19 07:49:04,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2971, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2023-11-19 07:49:04,374 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 160 predicate places. [2023-11-19 07:49:04,374 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 2971 flow [2023-11-19 07:49:04,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 68.45833333333333) internal successors, (1643), 24 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:04,375 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:04,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:04,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:49:04,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:49:04,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -313572933, now seen corresponding path program 9 times [2023-11-19 07:49:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:04,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564826523] [2023-11-19 07:49:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:04,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564826523] [2023-11-19 07:49:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564826523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791719986] [2023-11-19 07:49:04,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:49:04,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:04,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:04,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:04,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:49:04,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 07:49:04,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:04,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:49:04,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:04,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791719986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-19 07:49:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022280994] [2023-11-19 07:49:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:04,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:04,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:04,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 07:49:04,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 2971 flow. Second operand has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:04,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 07:49:04,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:05,555 INFO L124 PetriNetUnfolderBase]: 1366/2282 cut-off events. [2023-11-19 07:49:05,555 INFO L125 PetriNetUnfolderBase]: For 89524/89524 co-relation queries the response was YES. [2023-11-19 07:49:05,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16281 conditions, 2282 events. 1366/2282 cut-off events. For 89524/89524 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12264 event pairs, 61 based on Foata normal form. 218/2500 useless extension candidates. Maximal degree in co-relation 16205. Up to 997 conditions per place. [2023-11-19 07:49:05,593 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 27 selfloop transitions, 7 changer transitions 471/505 dead transitions. [2023-11-19 07:49:05,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 505 transitions, 8950 flow [2023-11-19 07:49:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:49:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:49:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2023-11-19 07:49:05,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45434131736526945 [2023-11-19 07:49:05,596 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2023-11-19 07:49:05,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2023-11-19 07:49:05,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:05,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2023-11-19 07:49:05,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:05,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:05,619 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:05,619 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 2971 flow. Second operand 8 states and 607 transitions. [2023-11-19 07:49:05,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 505 transitions, 8950 flow [2023-11-19 07:49:06,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 505 transitions, 8281 flow, removed 198 selfloop flow, removed 11 redundant places. [2023-11-19 07:49:06,170 INFO L231 Difference]: Finished difference. Result has 178 places, 22 transitions, 285 flow [2023-11-19 07:49:06,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=285, PETRI_PLACES=178, PETRI_TRANSITIONS=22} [2023-11-19 07:49:06,171 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 154 predicate places. [2023-11-19 07:49:06,171 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 22 transitions, 285 flow [2023-11-19 07:49:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:06,172 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:06,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:49:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:49:06,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:49:06,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1976595374, now seen corresponding path program 10 times [2023-11-19 07:49:06,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442932961] [2023-11-19 07:49:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442932961] [2023-11-19 07:49:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442932961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521110050] [2023-11-19 07:49:06,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:49:06,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:06,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:06,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:06,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:06,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:49:06,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:49:06,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:49:06,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:06,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:06,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521110050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:06,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:06,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-19 07:49:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698525716] [2023-11-19 07:49:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:06,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:06,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-19 07:49:06,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 22 transitions, 285 flow. Second operand has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:06,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-19 07:49:06,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:06,723 INFO L124 PetriNetUnfolderBase]: 68/141 cut-off events. [2023-11-19 07:49:06,724 INFO L125 PetriNetUnfolderBase]: For 3694/3694 co-relation queries the response was YES. [2023-11-19 07:49:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 141 events. 68/141 cut-off events. For 3694/3694 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 354 event pairs, 6 based on Foata normal form. 14/155 useless extension candidates. Maximal degree in co-relation 1049. Up to 68 conditions per place. [2023-11-19 07:49:06,726 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-11-19 07:49:06,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 67 transitions, 832 flow [2023-11-19 07:49:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:49:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:49:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 604 transitions. [2023-11-19 07:49:06,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45209580838323354 [2023-11-19 07:49:06,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 604 transitions. [2023-11-19 07:49:06,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 604 transitions. [2023-11-19 07:49:06,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:06,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 604 transitions. [2023-11-19 07:49:06,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,734 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,734 INFO L175 Difference]: Start difference. First operand has 178 places, 22 transitions, 285 flow. Second operand 8 states and 604 transitions. [2023-11-19 07:49:06,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 67 transitions, 832 flow [2023-11-19 07:49:06,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 438 flow, removed 103 selfloop flow, removed 46 redundant places. [2023-11-19 07:49:06,745 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-11-19 07:49:06,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-11-19 07:49:06,745 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2023-11-19 07:49:06,745 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-11-19 07:49:06,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.375) internal successors, (579), 8 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,749 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-19 07:49:06,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 07:49:06,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 07:49:06,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 07:49:06,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-19 07:49:06,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 07:49:06,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 07:49:06,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-19 07:49:06,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:06,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:49:06,971 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:06,974 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:49:06,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:49:06,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:49:06 BasicIcfg [2023-11-19 07:49:06,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:49:06,979 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:49:06,979 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:49:06,979 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:49:06,980 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:49" (3/4) ... [2023-11-19 07:49:06,982 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:49:06,987 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-19 07:49:06,987 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-19 07:49:06,991 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-19 07:49:06,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 07:49:06,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:49:06,992 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:49:07,090 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:49:07,091 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:49:07,091 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:49:07,092 INFO L158 Benchmark]: Toolchain (without parser) took 18782.40ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 130.2MB in the beginning and 172.5MB in the end (delta: -42.3MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,092 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:49:07,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.21ms. Allocated memory is still 178.3MB. Free memory was 129.7MB in the beginning and 110.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.21ms. Allocated memory is still 178.3MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,094 INFO L158 Benchmark]: Boogie Preprocessor took 31.68ms. Allocated memory is still 178.3MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,094 INFO L158 Benchmark]: RCFGBuilder took 459.37ms. Allocated memory is still 178.3MB. Free memory was 106.8MB in the beginning and 141.6MB in the end (delta: -34.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,095 INFO L158 Benchmark]: TraceAbstraction took 17452.16ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 141.6MB in the beginning and 176.7MB in the end (delta: -35.1MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,095 INFO L158 Benchmark]: Witness Printer took 112.52ms. Allocated memory is still 310.4MB. Free memory was 176.7MB in the beginning and 172.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:49:07,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.21ms. Allocated memory is still 178.3MB. Free memory was 129.7MB in the beginning and 110.5MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.21ms. Allocated memory is still 178.3MB. Free memory was 110.5MB in the beginning and 108.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.68ms. Allocated memory is still 178.3MB. Free memory was 108.4MB in the beginning and 107.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.37ms. Allocated memory is still 178.3MB. Free memory was 106.8MB in the beginning and 141.6MB in the end (delta: -34.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17452.16ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 141.6MB in the beginning and 176.7MB in the end (delta: -35.1MB). Peak memory consumption was 96.0MB. Max. memory is 16.1GB. * Witness Printer took 112.52ms. Allocated memory is still 310.4MB. Free memory was 176.7MB in the beginning and 172.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 81 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1366, independent conditional: 0, independent unconditional: 1366, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1395, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.3s, OverallIterations: 18, TraceHistogramMax: 6, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1694 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1480 mSDsluCounter, 486 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2680 IncrementalHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 70 mSDtfsCounter, 2680 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2971occurred in iteration=16, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 290 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 1336 SizeOfPredicates, 27 NumberOfNonLiveVariables, 958 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 30 InterpolantComputations, 13 PerfectInterpolantSequences, 95/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:49:07,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cf7964f-1ee9-4ce2-b929-bb1e049b6f57/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE