./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:07:54,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:07:54,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:07:54,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:07:54,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:07:54,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:07:54,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:07:54,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:07:54,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:07:54,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:07:54,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:07:54,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:07:54,463 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:07:54,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:07:54,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:07:54,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:07:54,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:07:54,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:07:54,467 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:07:54,468 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:07:54,468 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:07:54,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:07:54,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:07:54,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:07:54,471 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:07:54,471 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:07:54,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:07:54,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:07:54,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:07:54,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:54,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:07:54,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:07:54,475 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:07:54,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:07:54,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:07:54,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:07:54,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:07:54,477 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:07:54,478 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_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2023-11-12 02:07:54,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:07:54,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:07:54,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:07:54,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:07:54,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:07:54,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-12 02:07:58,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:58,451 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:58,451 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-12 02:07:58,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/data/4d43ffa11/2b6866f4815040f6874103f77e645124/FLAG60cbef603 [2023-11-12 02:07:58,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/data/4d43ffa11/2b6866f4815040f6874103f77e645124 [2023-11-12 02:07:58,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:58,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:58,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:58,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:58,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:58,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:58" (1/1) ... [2023-11-12 02:07:58,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562009a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:58, skipping insertion in model container [2023-11-12 02:07:58,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:58" (1/1) ... [2023-11-12 02:07:58,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:58,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:58,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:59,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:59,125 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:59,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59 WrapperNode [2023-11-12 02:07:59,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:59,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:59,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:59,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:59,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,221 INFO L138 Inliner]: procedures = 162, calls = 47, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 101 [2023-11-12 02:07:59,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:59,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:59,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:59,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:59,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:59,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:59,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:59,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:59,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (1/1) ... [2023-11-12 02:07:59,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:59,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:59,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:07:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:07:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:07:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:07:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:07:59,386 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:07:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:07:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:59,389 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:07:59,560 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:59,562 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:59,936 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:59,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:59,949 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:07:59,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:59 BoogieIcfgContainer [2023-11-12 02:07:59,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:59,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:59,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:59,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:59,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:58" (1/3) ... [2023-11-12 02:07:59,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e79eafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:59, skipping insertion in model container [2023-11-12 02:07:59,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:59" (2/3) ... [2023-11-12 02:07:59,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e79eafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:59, skipping insertion in model container [2023-11-12 02:07:59,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:59" (3/3) ... [2023-11-12 02:07:59,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-11-12 02:07:59,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:59,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-12 02:07:59,994 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:08:00,076 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-12 02:08:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 167 transitions, 341 flow [2023-11-12 02:08:00,221 INFO L124 PetriNetUnfolderBase]: 8/166 cut-off events. [2023-11-12 02:08:00,221 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:00,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 8/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-12 02:08:00,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 167 transitions, 341 flow [2023-11-12 02:08:00,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 161 transitions, 328 flow [2023-11-12 02:08:00,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:08:00,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 161 transitions, 328 flow [2023-11-12 02:08:00,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 161 transitions, 328 flow [2023-11-12 02:08:00,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 161 transitions, 328 flow [2023-11-12 02:08:00,325 INFO L124 PetriNetUnfolderBase]: 8/161 cut-off events. [2023-11-12 02:08:00,326 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:00,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 161 events. 8/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 199 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-12 02:08:00,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 5478 [2023-11-12 02:08:06,053 INFO L134 LiptonReduction]: Checked pairs total: 16334 [2023-11-12 02:08:06,053 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-11-12 02:08:06,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:08:06,078 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;@1c8d713f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:08:06,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-12 02:08:06,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:08:06,081 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:08:06,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:06,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:06,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:08:06,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:06,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 593, now seen corresponding path program 1 times [2023-11-12 02:08:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906933513] [2023-11-12 02:08:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:06,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906933513] [2023-11-12 02:08:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906933513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:06,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:08:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090699289] [2023-11-12 02:08:06,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:06,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:08:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:08:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:08:06,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 326 [2023-11-12 02:08:06,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:06,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 326 [2023-11-12 02:08:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:06,478 INFO L124 PetriNetUnfolderBase]: 264/609 cut-off events. [2023-11-12 02:08:06,479 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:08:06,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 609 events. 264/609 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2709 event pairs, 264 based on Foata normal form. 13/522 useless extension candidates. Maximal degree in co-relation 1167. Up to 567 conditions per place. [2023-11-12 02:08:06,488 INFO L140 encePairwiseOnDemand]: 317/326 looper letters, 37 selfloop transitions, 0 changer transitions 1/43 dead transitions. [2023-11-12 02:08:06,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 168 flow [2023-11-12 02:08:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:08:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:08:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 353 transitions. [2023-11-12 02:08:06,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414110429447853 [2023-11-12 02:08:06,514 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 353 transitions. [2023-11-12 02:08:06,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 353 transitions. [2023-11-12 02:08:06,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:06,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 353 transitions. [2023-11-12 02:08:06,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,535 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,537 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 120 flow. Second operand 2 states and 353 transitions. [2023-11-12 02:08:06,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 168 flow [2023-11-12 02:08:06,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:06,544 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 86 flow [2023-11-12 02:08:06,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-12 02:08:06,553 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2023-11-12 02:08:06,553 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 86 flow [2023-11-12 02:08:06,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:06,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:08:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:08:06,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 561099297, now seen corresponding path program 1 times [2023-11-12 02:08:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071916955] [2023-11-12 02:08:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071916955] [2023-11-12 02:08:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071916955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:06,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663660397] [2023-11-12 02:08:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:06,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:06,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 326 [2023-11-12 02:08:06,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:06,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:06,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 326 [2023-11-12 02:08:06,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:07,107 INFO L124 PetriNetUnfolderBase]: 377/912 cut-off events. [2023-11-12 02:08:07,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:08:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 912 events. 377/912 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5081 event pairs, 63 based on Foata normal form. 0/810 useless extension candidates. Maximal degree in co-relation 1732. Up to 426 conditions per place. [2023-11-12 02:08:07,116 INFO L140 encePairwiseOnDemand]: 318/326 looper letters, 61 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2023-11-12 02:08:07,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 277 flow [2023-11-12 02:08:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-11-12 02:08:07,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306748466257669 [2023-11-12 02:08:07,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-11-12 02:08:07,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-11-12 02:08:07,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:07,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-11-12 02:08:07,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,127 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 86 flow. Second operand 3 states and 519 transitions. [2023-11-12 02:08:07,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 277 flow [2023-11-12 02:08:07,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:08:07,129 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 124 flow [2023-11-12 02:08:07,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-12 02:08:07,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-11-12 02:08:07,131 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 124 flow [2023-11-12 02:08:07,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:07,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:07,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:08:07,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:07,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2052199171, now seen corresponding path program 1 times [2023-11-12 02:08:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:07,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277175435] [2023-11-12 02:08:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277175435] [2023-11-12 02:08:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277175435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631695530] [2023-11-12 02:08:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:07,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:07,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:07,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 326 [2023-11-12 02:08:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:07,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 326 [2023-11-12 02:08:07,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:07,570 INFO L124 PetriNetUnfolderBase]: 591/1270 cut-off events. [2023-11-12 02:08:07,570 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-11-12 02:08:07,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2809 conditions, 1270 events. 591/1270 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6599 event pairs, 357 based on Foata normal form. 6/1175 useless extension candidates. Maximal degree in co-relation 2804. Up to 1111 conditions per place. [2023-11-12 02:08:07,580 INFO L140 encePairwiseOnDemand]: 310/326 looper letters, 67 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2023-11-12 02:08:07,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 83 transitions, 392 flow [2023-11-12 02:08:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-11-12 02:08:07,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051124744376279 [2023-11-12 02:08:07,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-11-12 02:08:07,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-11-12 02:08:07,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:07,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-11-12 02:08:07,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,590 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 124 flow. Second operand 3 states and 494 transitions. [2023-11-12 02:08:07,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 83 transitions, 392 flow [2023-11-12 02:08:07,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:07,597 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 218 flow [2023-11-12 02:08:07,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-11-12 02:08:07,598 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-12 02:08:07,598 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 218 flow [2023-11-12 02:08:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:07,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:07,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:07,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:08:07,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:07,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1667505581, now seen corresponding path program 1 times [2023-11-12 02:08:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664659315] [2023-11-12 02:08:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:07,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664659315] [2023-11-12 02:08:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664659315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:07,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:07,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563963611] [2023-11-12 02:08:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:07,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:08,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 326 [2023-11-12 02:08:08,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:08,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 326 [2023-11-12 02:08:08,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:08,305 INFO L124 PetriNetUnfolderBase]: 295/710 cut-off events. [2023-11-12 02:08:08,305 INFO L125 PetriNetUnfolderBase]: For 137/145 co-relation queries the response was YES. [2023-11-12 02:08:08,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1839 conditions, 710 events. 295/710 cut-off events. For 137/145 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3628 event pairs, 116 based on Foata normal form. 15/617 useless extension candidates. Maximal degree in co-relation 1833. Up to 359 conditions per place. [2023-11-12 02:08:08,314 INFO L140 encePairwiseOnDemand]: 317/326 looper letters, 69 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2023-11-12 02:08:08,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 87 transitions, 459 flow [2023-11-12 02:08:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2023-11-12 02:08:08,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-12 02:08:08,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2023-11-12 02:08:08,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2023-11-12 02:08:08,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:08,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2023-11-12 02:08:08,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,329 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 218 flow. Second operand 4 states and 652 transitions. [2023-11-12 02:08:08,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 87 transitions, 459 flow [2023-11-12 02:08:08,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:08,340 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 252 flow [2023-11-12 02:08:08,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-11-12 02:08:08,342 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-12 02:08:08,343 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 252 flow [2023-11-12 02:08:08,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:08,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:08,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:08:08,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:08,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1855582062, now seen corresponding path program 1 times [2023-11-12 02:08:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12758221] [2023-11-12 02:08:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:08,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:08,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12758221] [2023-11-12 02:08:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12758221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:08,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:08,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781514875] [2023-11-12 02:08:08,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:08,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 326 [2023-11-12 02:08:08,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:08,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 326 [2023-11-12 02:08:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:08,752 INFO L124 PetriNetUnfolderBase]: 320/782 cut-off events. [2023-11-12 02:08:08,753 INFO L125 PetriNetUnfolderBase]: For 227/231 co-relation queries the response was YES. [2023-11-12 02:08:08,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 782 events. 320/782 cut-off events. For 227/231 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4092 event pairs, 118 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 2250. Up to 377 conditions per place. [2023-11-12 02:08:08,762 INFO L140 encePairwiseOnDemand]: 321/326 looper letters, 73 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-12 02:08:08,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 86 transitions, 507 flow [2023-11-12 02:08:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-11-12 02:08:08,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523517382413088 [2023-11-12 02:08:08,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-11-12 02:08:08,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-11-12 02:08:08,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:08,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-11-12 02:08:08,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,780 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 252 flow. Second operand 3 states and 512 transitions. [2023-11-12 02:08:08,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 86 transitions, 507 flow [2023-11-12 02:08:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 86 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:08:08,786 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 277 flow [2023-11-12 02:08:08,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-11-12 02:08:08,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-12 02:08:08,790 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 277 flow [2023-11-12 02:08:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:08,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:08,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:08:08,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:08,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -97325944, now seen corresponding path program 1 times [2023-11-12 02:08:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17802529] [2023-11-12 02:08:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:09,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:09,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17802529] [2023-11-12 02:08:09,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17802529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144654523] [2023-11-12 02:08:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:09,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:09,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 326 [2023-11-12 02:08:09,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:09,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 326 [2023-11-12 02:08:09,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:09,230 INFO L124 PetriNetUnfolderBase]: 287/724 cut-off events. [2023-11-12 02:08:09,230 INFO L125 PetriNetUnfolderBase]: For 304/308 co-relation queries the response was YES. [2023-11-12 02:08:09,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 724 events. 287/724 cut-off events. For 304/308 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3687 event pairs, 227 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 2195. Up to 589 conditions per place. [2023-11-12 02:08:09,238 INFO L140 encePairwiseOnDemand]: 320/326 looper letters, 56 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-12 02:08:09,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 439 flow [2023-11-12 02:08:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-11-12 02:08:09,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49309815950920244 [2023-11-12 02:08:09,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-11-12 02:08:09,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-11-12 02:08:09,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:09,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-11-12 02:08:09,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,253 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 277 flow. Second operand 4 states and 643 transitions. [2023-11-12 02:08:09,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 439 flow [2023-11-12 02:08:09,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:09,260 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 276 flow [2023-11-12 02:08:09,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-11-12 02:08:09,264 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-12 02:08:09,264 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 276 flow [2023-11-12 02:08:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:09,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:08:09,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1729606088, now seen corresponding path program 1 times [2023-11-12 02:08:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516173584] [2023-11-12 02:08:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516173584] [2023-11-12 02:08:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516173584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:09,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679795875] [2023-11-12 02:08:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:09,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 326 [2023-11-12 02:08:09,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:09,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 326 [2023-11-12 02:08:09,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:09,670 INFO L124 PetriNetUnfolderBase]: 253/648 cut-off events. [2023-11-12 02:08:09,670 INFO L125 PetriNetUnfolderBase]: For 304/308 co-relation queries the response was YES. [2023-11-12 02:08:09,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 648 events. 253/648 cut-off events. For 304/308 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3177 event pairs, 211 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 1943. Up to 565 conditions per place. [2023-11-12 02:08:09,677 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 45 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-12 02:08:09,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 350 flow [2023-11-12 02:08:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-11-12 02:08:09,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867075664621677 [2023-11-12 02:08:09,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-11-12 02:08:09,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-11-12 02:08:09,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:09,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-11-12 02:08:09,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,686 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 276 flow. Second operand 3 states and 476 transitions. [2023-11-12 02:08:09,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 350 flow [2023-11-12 02:08:09,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 340 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:09,691 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 250 flow [2023-11-12 02:08:09,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-11-12 02:08:09,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-12 02:08:09,693 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 250 flow [2023-11-12 02:08:09,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:09,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:08:09,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1729606087, now seen corresponding path program 1 times [2023-11-12 02:08:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:09,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461231750] [2023-11-12 02:08:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:09,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461231750] [2023-11-12 02:08:09,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461231750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:09,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:09,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:09,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383788728] [2023-11-12 02:08:09,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:09,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:09,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:09,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 326 [2023-11-12 02:08:09,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:09,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:09,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 326 [2023-11-12 02:08:09,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:10,010 INFO L124 PetriNetUnfolderBase]: 219/573 cut-off events. [2023-11-12 02:08:10,010 INFO L125 PetriNetUnfolderBase]: For 231/235 co-relation queries the response was YES. [2023-11-12 02:08:10,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 573 events. 219/573 cut-off events. For 231/235 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2735 event pairs, 184 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1652. Up to 501 conditions per place. [2023-11-12 02:08:10,016 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-12 02:08:10,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 318 flow [2023-11-12 02:08:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-11-12 02:08:10,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47648261758691207 [2023-11-12 02:08:10,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-11-12 02:08:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-11-12 02:08:10,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:10,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-11-12 02:08:10,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,027 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 250 flow. Second operand 3 states and 466 transitions. [2023-11-12 02:08:10,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 318 flow [2023-11-12 02:08:10,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:10,031 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 230 flow [2023-11-12 02:08:10,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-12 02:08:10,032 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-12 02:08:10,032 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 230 flow [2023-11-12 02:08:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:10,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:08:10,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1729778341, now seen corresponding path program 1 times [2023-11-12 02:08:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485124359] [2023-11-12 02:08:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:10,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485124359] [2023-11-12 02:08:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485124359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:10,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:10,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:08:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446734984] [2023-11-12 02:08:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:10,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 326 [2023-11-12 02:08:10,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:10,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 326 [2023-11-12 02:08:10,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:10,451 INFO L124 PetriNetUnfolderBase]: 145/472 cut-off events. [2023-11-12 02:08:10,451 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-11-12 02:08:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 472 events. 145/472 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2276 event pairs, 42 based on Foata normal form. 54/521 useless extension candidates. Maximal degree in co-relation 1466. Up to 263 conditions per place. [2023-11-12 02:08:10,457 INFO L140 encePairwiseOnDemand]: 306/326 looper letters, 55 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2023-11-12 02:08:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 548 flow [2023-11-12 02:08:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-12 02:08:10,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775051124744376 [2023-11-12 02:08:10,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-12 02:08:10,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-12 02:08:10,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:10,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-12 02:08:10,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,470 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 230 flow. Second operand 3 states and 467 transitions. [2023-11-12 02:08:10,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 548 flow [2023-11-12 02:08:10,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 544 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:10,477 INFO L231 Difference]: Finished difference. Result has 55 places, 69 transitions, 431 flow [2023-11-12 02:08:10,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=55, PETRI_TRANSITIONS=69} [2023-11-12 02:08:10,478 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-11-12 02:08:10,478 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 69 transitions, 431 flow [2023-11-12 02:08:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:10,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:10,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:08:10,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:10,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:10,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2083441417, now seen corresponding path program 1 times [2023-11-12 02:08:10,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265963993] [2023-11-12 02:08:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265963993] [2023-11-12 02:08:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265963993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:08:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249732492] [2023-11-12 02:08:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:08:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:08:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:08:11,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 326 [2023-11-12 02:08:11,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 69 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:11,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 326 [2023-11-12 02:08:11,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:11,235 INFO L124 PetriNetUnfolderBase]: 102/355 cut-off events. [2023-11-12 02:08:11,235 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2023-11-12 02:08:11,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 355 events. 102/355 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1569 event pairs, 32 based on Foata normal form. 4/354 useless extension candidates. Maximal degree in co-relation 1367. Up to 294 conditions per place. [2023-11-12 02:08:11,239 INFO L140 encePairwiseOnDemand]: 321/326 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-12 02:08:11,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 535 flow [2023-11-12 02:08:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-11-12 02:08:11,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45245398773006135 [2023-11-12 02:08:11,244 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-11-12 02:08:11,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-11-12 02:08:11,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:11,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-11-12 02:08:11,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,252 INFO L175 Difference]: Start difference. First operand has 55 places, 69 transitions, 431 flow. Second operand 4 states and 590 transitions. [2023-11-12 02:08:11,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 535 flow [2023-11-12 02:08:11,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 494 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:11,256 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 316 flow [2023-11-12 02:08:11,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-12 02:08:11,258 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-12 02:08:11,259 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 316 flow [2023-11-12 02:08:11,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:11,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:11,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:08:11,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1272658702, now seen corresponding path program 1 times [2023-11-12 02:08:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583163788] [2023-11-12 02:08:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:11,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583163788] [2023-11-12 02:08:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583163788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:11,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:11,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:08:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058090836] [2023-11-12 02:08:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:11,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:08:11,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:08:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:08:11,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 326 [2023-11-12 02:08:11,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:11,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 326 [2023-11-12 02:08:11,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:11,936 INFO L124 PetriNetUnfolderBase]: 36/205 cut-off events. [2023-11-12 02:08:11,937 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-12 02:08:11,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 205 events. 36/205 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 729 event pairs, 6 based on Foata normal form. 14/217 useless extension candidates. Maximal degree in co-relation 734. Up to 128 conditions per place. [2023-11-12 02:08:11,939 INFO L140 encePairwiseOnDemand]: 321/326 looper letters, 51 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2023-11-12 02:08:11,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 466 flow [2023-11-12 02:08:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 591 transitions. [2023-11-12 02:08:11,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532208588957055 [2023-11-12 02:08:11,943 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 591 transitions. [2023-11-12 02:08:11,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 591 transitions. [2023-11-12 02:08:11,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:11,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 591 transitions. [2023-11-12 02:08:11,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,950 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 316 flow. Second operand 4 states and 591 transitions. [2023-11-12 02:08:11,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 466 flow [2023-11-12 02:08:11,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 436 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:11,954 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 286 flow [2023-11-12 02:08:11,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-12 02:08:11,955 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-12 02:08:11,956 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 286 flow [2023-11-12 02:08:11,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:11,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:11,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:11,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:08:11,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:11,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1233739380, now seen corresponding path program 1 times [2023-11-12 02:08:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874527142] [2023-11-12 02:08:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874527142] [2023-11-12 02:08:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874527142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:08:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492657535] [2023-11-12 02:08:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:08:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:08:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:08:12,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 326 [2023-11-12 02:08:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:12,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 326 [2023-11-12 02:08:12,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:12,296 INFO L124 PetriNetUnfolderBase]: 36/203 cut-off events. [2023-11-12 02:08:12,296 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-12 02:08:12,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 203 events. 36/203 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 693 event pairs, 17 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 694. Up to 145 conditions per place. [2023-11-12 02:08:12,298 INFO L140 encePairwiseOnDemand]: 322/326 looper letters, 51 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-12 02:08:12,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 447 flow [2023-11-12 02:08:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:08:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:08:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-11-12 02:08:12,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49079754601226994 [2023-11-12 02:08:12,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-11-12 02:08:12,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-11-12 02:08:12,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:12,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-11-12 02:08:12,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,313 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 286 flow. Second operand 4 states and 640 transitions. [2023-11-12 02:08:12,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 447 flow [2023-11-12 02:08:12,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:08:12,317 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 277 flow [2023-11-12 02:08:12,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-12 02:08:12,320 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-12 02:08:12,320 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 277 flow [2023-11-12 02:08:12,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:08:12,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:08:12,323 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-12 02:08:12,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:08:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1154580662, now seen corresponding path program 1 times [2023-11-12 02:08:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:08:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32055215] [2023-11-12 02:08:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:08:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:08:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:08:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:08:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:08:12,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32055215] [2023-11-12 02:08:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32055215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:08:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:08:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:08:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505074482] [2023-11-12 02:08:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:08:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:08:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:08:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:08:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:08:12,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 326 [2023-11-12 02:08:12,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:08:12,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 326 [2023-11-12 02:08:12,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:08:12,756 INFO L124 PetriNetUnfolderBase]: 36/200 cut-off events. [2023-11-12 02:08:12,756 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-11-12 02:08:12,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 200 events. 36/200 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 684 event pairs, 24 based on Foata normal form. 3/203 useless extension candidates. Maximal degree in co-relation 691. Up to 181 conditions per place. [2023-11-12 02:08:12,757 INFO L140 encePairwiseOnDemand]: 324/326 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-11-12 02:08:12,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 361 flow [2023-11-12 02:08:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:08:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:08:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-12 02:08:12,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48568507157464214 [2023-11-12 02:08:12,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-12 02:08:12,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-12 02:08:12,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:08:12,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-12 02:08:12,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,767 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 277 flow. Second operand 3 states and 475 transitions. [2023-11-12 02:08:12,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 361 flow [2023-11-12 02:08:12,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 355 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:08:12,770 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-11-12 02:08:12,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-11-12 02:08:12,771 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-12 02:08:12,771 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-11-12 02:08:12,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:08:12,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-12 02:08:12,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-12 02:08:12,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2023-11-12 02:08:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-12 02:08:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-11-12 02:08:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-12 02:08:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-12 02:08:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-12 02:08:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-12 02:08:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-12 02:08:12,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:08:12,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:08:12,781 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:08:12,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:08:12,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:08:12 BasicIcfg [2023-11-12 02:08:12,785 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:08:12,786 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:08:12,786 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:08:12,786 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:08:12,787 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:59" (3/4) ... [2023-11-12 02:08:12,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:08:12,794 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-12 02:08:12,802 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-12 02:08:12,802 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 02:08:12,803 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:08:12,803 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:08:12,904 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:08:12,905 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:08:12,905 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:08:12,906 INFO L158 Benchmark]: Toolchain (without parser) took 14416.29ms. Allocated memory was 125.8MB in the beginning and 249.6MB in the end (delta: 123.7MB). Free memory was 79.7MB in the beginning and 176.4MB in the end (delta: -96.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,906 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:08:12,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 635.02ms. Allocated memory is still 125.8MB. Free memory was 79.4MB in the beginning and 59.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.97ms. Allocated memory is still 125.8MB. Free memory was 59.9MB in the beginning and 57.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,908 INFO L158 Benchmark]: Boogie Preprocessor took 51.24ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 57.7MB in the beginning and 141.5MB in the end (delta: -83.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,908 INFO L158 Benchmark]: RCFGBuilder took 678.41ms. Allocated memory is still 172.0MB. Free memory was 141.5MB in the beginning and 127.5MB in the end (delta: 14.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,909 INFO L158 Benchmark]: TraceAbstraction took 12828.74ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 126.7MB in the beginning and 181.6MB in the end (delta: -54.9MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,909 INFO L158 Benchmark]: Witness Printer took 119.18ms. Allocated memory is still 249.6MB. Free memory was 181.6MB in the beginning and 176.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:08:12,911 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 635.02ms. Allocated memory is still 125.8MB. Free memory was 79.4MB in the beginning and 59.9MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.97ms. Allocated memory is still 125.8MB. Free memory was 59.9MB in the beginning and 57.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.24ms. Allocated memory was 125.8MB in the beginning and 172.0MB in the end (delta: 46.1MB). Free memory was 57.7MB in the beginning and 141.5MB in the end (delta: -83.8MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * RCFGBuilder took 678.41ms. Allocated memory is still 172.0MB. Free memory was 141.5MB in the beginning and 127.5MB in the end (delta: 14.0MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12828.74ms. Allocated memory was 172.0MB in the beginning and 249.6MB in the end (delta: 77.6MB). Free memory was 126.7MB in the beginning and 181.6MB in the end (delta: -54.9MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 119.18ms. Allocated memory is still 249.6MB. Free memory was 181.6MB in the beginning and 176.4MB in the end (delta: 5.2MB). 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: 5.8s, 157 PlacesBefore, 54 PlacesAfterwards, 161 TransitionsBefore, 57 TransitionsAfterwards, 5478 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 1 ChoiceCompositions, 159 TotalNumberOfCompositions, 16334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5131, independent: 4665, independent conditional: 0, independent unconditional: 4665, dependent: 466, dependent conditional: 0, dependent unconditional: 466, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3040, independent: 2942, independent conditional: 0, independent unconditional: 2942, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5131, independent: 1723, independent conditional: 0, independent unconditional: 1723, dependent: 368, dependent conditional: 0, dependent unconditional: 368, unknown: 3040, unknown conditional: 0, unknown unconditional: 3040] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 54, Negative conditional cache size: 0, Negative unconditional cache size: 54, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 704]: 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 3 procedures, 195 locations, 10 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: 12.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 929 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 530 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1629 IncrementalHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 220 mSolverCounterUnsat, 58 mSDtfsCounter, 1629 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=9, InterpolantAutomatonStates: 43, 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, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 1133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:08:12,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa32535-f835-48fc-aba0-b4fb9019f090/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE