./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:58,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:58,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:49:58,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:58,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:58,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:58,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:58,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:58,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:49:58,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:49:58,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:58,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:58,402 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:58,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:58,404 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:49:58,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:58,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:49:58,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:58,406 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:49:58,406 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:49:58,407 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:49:58,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:49:58,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:49:58,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:49:58,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:49:58,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:58,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:58,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:58,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:49:58,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:58,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:58,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:49:58,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:49:58,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:49:58,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:49:58,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:49:58,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:49:58,414 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:49:58,415 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_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 [2023-11-06 22:49:58,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:58,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:58,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:58,736 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:58,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:58,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2023-11-06 22:50:01,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:02,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:02,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2023-11-06 22:50:02,132 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/data/ab5eb67b9/e92d9e65ad344ef7a6cf50d614d40266/FLAG87cd66d72 [2023-11-06 22:50:02,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/data/ab5eb67b9/e92d9e65ad344ef7a6cf50d614d40266 [2023-11-06 22:50:02,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:02,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:02,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:02,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:02,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:02,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e562558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02, skipping insertion in model container [2023-11-06 22:50:02,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:02,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:02,759 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:02,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:02,870 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:02,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02 WrapperNode [2023-11-06 22:50:02,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:02,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:02,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:02,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:02,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,919 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-11-06 22:50:02,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:02,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:02,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:02,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:02,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:02,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:02,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:02,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:02,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (1/1) ... [2023-11-06 22:50:02,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:02,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:03,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:50:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:50:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:50:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:50:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:50:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:50:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:50:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:50:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:03,034 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:50:03,182 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:03,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:03,352 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:03,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:03,359 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:50:03,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:03 BoogieIcfgContainer [2023-11-06 22:50:03,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:03,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:03,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:03,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:03,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:02" (1/3) ... [2023-11-06 22:50:03,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab32d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:03, skipping insertion in model container [2023-11-06 22:50:03,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:02" (2/3) ... [2023-11-06 22:50:03,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab32d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:03, skipping insertion in model container [2023-11-06 22:50:03,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:03" (3/3) ... [2023-11-06 22:50:03,371 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2023-11-06 22:50:03,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:03,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-06 22:50:03,390 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:50:03,522 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:50:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 153 flow [2023-11-06 22:50:03,604 INFO L124 PetriNetUnfolderBase]: 0/72 cut-off events. [2023-11-06 22:50:03,604 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:50:03,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 0/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-06 22:50:03,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 153 flow [2023-11-06 22:50:03,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 140 flow [2023-11-06 22:50:03,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:03,626 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 67 transitions, 140 flow [2023-11-06 22:50:03,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 67 transitions, 140 flow [2023-11-06 22:50:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 140 flow [2023-11-06 22:50:03,653 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2023-11-06 22:50:03,654 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:50:03,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 0/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 81 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-06 22:50:03,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2023-11-06 22:50:06,820 INFO L134 LiptonReduction]: Checked pairs total: 1918 [2023-11-06 22:50:06,821 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-06 22:50:06,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:50:06,858 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;@22ec7c45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:50:06,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:50:06,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:50:06,861 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:50:06,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:06,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:06,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:50:06,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:06,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash 272, now seen corresponding path program 1 times [2023-11-06 22:50:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506660027] [2023-11-06 22:50:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506660027] [2023-11-06 22:50:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506660027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:07,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:07,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:50:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280812413] [2023-11-06 22:50:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:50:07,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:50:07,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:50:07,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 153 [2023-11-06 22:50:07,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:07,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 153 [2023-11-06 22:50:07,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:07,159 INFO L124 PetriNetUnfolderBase]: 35/103 cut-off events. [2023-11-06 22:50:07,159 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:50:07,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 103 events. 35/103 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 402 event pairs, 35 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 181. Up to 87 conditions per place. [2023-11-06 22:50:07,164 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-06 22:50:07,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 76 flow [2023-11-06 22:50:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:50:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:50:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2023-11-06 22:50:07,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-11-06 22:50:07,181 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2023-11-06 22:50:07,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2023-11-06 22:50:07,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:07,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2023-11-06 22:50:07,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 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) [2023-11-06 22:50:07,202 INFO L81 ComplementDD]: Finished complementDD. Result 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) [2023-11-06 22:50:07,204 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 2 states and 164 transitions. [2023-11-06 22:50:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 76 flow [2023-11-06 22:50:07,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:07,209 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 40 flow [2023-11-06 22:50:07,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-11-06 22:50:07,215 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-06 22:50:07,216 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 40 flow [2023-11-06 22:50:07,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:07,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:50:07,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:50:07,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:07,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 267564, now seen corresponding path program 1 times [2023-11-06 22:50:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456649253] [2023-11-06 22:50:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456649253] [2023-11-06 22:50:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456649253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:07,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:07,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:07,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971453475] [2023-11-06 22:50:07,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:07,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 153 [2023-11-06 22:50:07,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:07,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 153 [2023-11-06 22:50:07,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:07,627 INFO L124 PetriNetUnfolderBase]: 24/76 cut-off events. [2023-11-06 22:50:07,627 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:50:07,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 76 events. 24/76 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 259 event pairs, 24 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 139. Up to 62 conditions per place. [2023-11-06 22:50:07,628 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 13 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-11-06 22:50:07,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 64 flow [2023-11-06 22:50:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2023-11-06 22:50:07,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793028322440087 [2023-11-06 22:50:07,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2023-11-06 22:50:07,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2023-11-06 22:50:07,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:07,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2023-11-06 22:50:07,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,644 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 40 flow. Second operand 3 states and 220 transitions. [2023-11-06 22:50:07,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 64 flow [2023-11-06 22:50:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:50:07,645 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 38 flow [2023-11-06 22:50:07,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-06 22:50:07,647 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-11-06 22:50:07,647 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 38 flow [2023-11-06 22:50:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:07,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:50:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:50:07,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:07,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 267565, now seen corresponding path program 1 times [2023-11-06 22:50:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425054703] [2023-11-06 22:50:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425054703] [2023-11-06 22:50:07,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425054703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:07,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:07,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985634151] [2023-11-06 22:50:07,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:07,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2023-11-06 22:50:07,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:07,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2023-11-06 22:50:07,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:07,917 INFO L124 PetriNetUnfolderBase]: 15/53 cut-off events. [2023-11-06 22:50:07,918 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:50:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 53 events. 15/53 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 154 event pairs, 15 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 97. Up to 41 conditions per place. [2023-11-06 22:50:07,920 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 10 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-06 22:50:07,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 58 flow [2023-11-06 22:50:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-11-06 22:50:07,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553376906318083 [2023-11-06 22:50:07,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-11-06 22:50:07,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-11-06 22:50:07,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:07,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-11-06 22:50:07,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,934 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 38 flow. Second operand 3 states and 209 transitions. [2023-11-06 22:50:07,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 58 flow [2023-11-06 22:50:07,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:50:07,935 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 37 flow [2023-11-06 22:50:07,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-06 22:50:07,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -8 predicate places. [2023-11-06 22:50:07,937 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 37 flow [2023-11-06 22:50:07,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:07,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:50:07,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:50:07,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:07,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -618463348, now seen corresponding path program 1 times [2023-11-06 22:50:07,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:07,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052766632] [2023-11-06 22:50:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052766632] [2023-11-06 22:50:08,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052766632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135246537] [2023-11-06 22:50:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 153 [2023-11-06 22:50:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 153 [2023-11-06 22:50:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:08,097 INFO L124 PetriNetUnfolderBase]: 15/49 cut-off events. [2023-11-06 22:50:08,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:08,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 49 events. 15/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 15 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 95. Up to 41 conditions per place. [2023-11-06 22:50:08,098 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-11-06 22:50:08,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 59 flow [2023-11-06 22:50:08,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-06 22:50:08,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335511982570806 [2023-11-06 22:50:08,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-06 22:50:08,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-06 22:50:08,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:08,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-06 22:50:08,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,105 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 37 flow. Second operand 3 states and 199 transitions. [2023-11-06 22:50:08,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 59 flow [2023-11-06 22:50:08,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 55 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:08,106 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 35 flow [2023-11-06 22:50:08,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-06 22:50:08,107 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2023-11-06 22:50:08,107 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 35 flow [2023-11-06 22:50:08,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:08,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:50:08,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:50:08,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:08,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:08,109 INFO L85 PathProgramCache]: Analyzing trace with hash -618463347, now seen corresponding path program 1 times [2023-11-06 22:50:08,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:08,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084342235] [2023-11-06 22:50:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084342235] [2023-11-06 22:50:08,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084342235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186625699] [2023-11-06 22:50:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2023-11-06 22:50:08,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:08,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2023-11-06 22:50:08,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:08,242 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2023-11-06 22:50:08,243 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:50:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 39 events. 9/39 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 9 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 71. Up to 27 conditions per place. [2023-11-06 22:50:08,244 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 8 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2023-11-06 22:50:08,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 53 flow [2023-11-06 22:50:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:08,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2023-11-06 22:50:08,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44880174291938996 [2023-11-06 22:50:08,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 206 transitions. [2023-11-06 22:50:08,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 206 transitions. [2023-11-06 22:50:08,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:08,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 206 transitions. [2023-11-06 22:50:08,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,251 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 35 flow. Second operand 3 states and 206 transitions. [2023-11-06 22:50:08,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 53 flow [2023-11-06 22:50:08,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:08,252 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 33 flow [2023-11-06 22:50:08,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-06 22:50:08,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-11-06 22:50:08,254 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 33 flow [2023-11-06 22:50:08,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:08,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:50:08,255 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:08,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1196376800, now seen corresponding path program 1 times [2023-11-06 22:50:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663835870] [2023-11-06 22:50:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663835870] [2023-11-06 22:50:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663835870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:50:08,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996960250] [2023-11-06 22:50:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 153 [2023-11-06 22:50:08,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:08,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 153 [2023-11-06 22:50:08,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:08,386 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-06 22:50:08,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:50:08,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 1/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 1 based on Foata normal form. 5/26 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2023-11-06 22:50:08,387 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 7 selfloop transitions, 4 changer transitions 0/13 dead transitions. [2023-11-06 22:50:08,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2023-11-06 22:50:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-11-06 22:50:08,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2023-11-06 22:50:08,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-11-06 22:50:08,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-11-06 22:50:08,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:08,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-11-06 22:50:08,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,393 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 33 flow. Second operand 3 states and 211 transitions. [2023-11-06 22:50:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2023-11-06 22:50:08,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:50:08,394 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 37 flow [2023-11-06 22:50:08,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-06 22:50:08,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-11-06 22:50:08,397 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 37 flow [2023-11-06 22:50:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:50:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:50:08,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-06 22:50:08,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash -886096078, now seen corresponding path program 2 times [2023-11-06 22:50:08,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672242900] [2023-11-06 22:50:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:08,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672242900] [2023-11-06 22:50:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672242900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:50:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394494428] [2023-11-06 22:50:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 153 [2023-11-06 22:50:08,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:50:08,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 153 [2023-11-06 22:50:08,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:50:08,675 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-06 22:50:08,675 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:50:08,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 21 events. 1/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 46. Up to 15 conditions per place. [2023-11-06 22:50:08,676 INFO L140 encePairwiseOnDemand]: 151/153 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-11-06 22:50:08,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 53 flow [2023-11-06 22:50:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:50:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-06 22:50:08,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4531590413943355 [2023-11-06 22:50:08,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-06 22:50:08,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-06 22:50:08,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:50:08,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-06 22:50:08,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,682 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 37 flow. Second operand 3 states and 208 transitions. [2023-11-06 22:50:08,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 53 flow [2023-11-06 22:50:08,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:50:08,683 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-11-06 22:50:08,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-11-06 22:50:08,684 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-11-06 22:50:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-11-06 22:50:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:08,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-11-06 22:50:08,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-11-06 22:50:08,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-06 22:50:08,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-11-06 22:50:08,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-06 22:50:08,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-06 22:50:08,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-11-06 22:50:08,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-11-06 22:50:08,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2023-11-06 22:50:08,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-06 22:50:08,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-11-06 22:50:08,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-06 22:50:08,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-06 22:50:08,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-06 22:50:08,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-11-06 22:50:08,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-11-06 22:50:08,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-11-06 22:50:08,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-11-06 22:50:08,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:50:08,692 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-06 22:50:08,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:50:08,698 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:50:08,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:50:08 BasicIcfg [2023-11-06 22:50:08,702 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:50:08,703 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:50:08,703 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:50:08,703 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:50:08,703 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:03" (3/4) ... [2023-11-06 22:50:08,705 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:50:08,709 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-06 22:50:08,714 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 22:50:08,714 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:50:08,714 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:50:08,769 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:50:08,769 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:50:08,769 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:50:08,770 INFO L158 Benchmark]: Toolchain (without parser) took 6595.52ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 117.5MB in the beginning and 54.5MB in the end (delta: 63.0MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,770 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 121.6MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:50:08,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.15ms. Allocated memory is still 146.8MB. Free memory was 117.5MB in the beginning and 90.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.98ms. Allocated memory is still 146.8MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,771 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 146.8MB. Free memory was 88.2MB in the beginning and 87.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:50:08,772 INFO L158 Benchmark]: RCFGBuilder took 411.49ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 72.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,772 INFO L158 Benchmark]: TraceAbstraction took 5337.79ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 72.0MB in the beginning and 57.6MB in the end (delta: 14.3MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,772 INFO L158 Benchmark]: Witness Printer took 66.96ms. Allocated memory is still 176.2MB. Free memory was 57.6MB in the beginning and 54.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:50:08,774 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 121.6MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.15ms. Allocated memory is still 146.8MB. Free memory was 117.5MB in the beginning and 90.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.98ms. Allocated memory is still 146.8MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 146.8MB. Free memory was 88.2MB in the beginning and 87.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 411.49ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 72.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5337.79ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 72.0MB in the beginning and 57.6MB in the end (delta: 14.3MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 66.96ms. Allocated memory is still 176.2MB. Free memory was 57.6MB in the beginning and 54.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 71 PlacesBefore, 29 PlacesAfterwards, 67 TransitionsBefore, 25 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 80 TotalNumberOfCompositions, 1918 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1103, independent: 965, independent conditional: 0, independent unconditional: 965, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 311, independent: 287, independent conditional: 0, independent unconditional: 287, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1103, independent: 678, independent conditional: 0, independent unconditional: 678, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 311, unknown conditional: 0, unknown unconditional: 311] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: 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: -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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 locations, 18 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: 5.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 318 IncrementalHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 52 mSDtfsCounter, 318 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 20, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:50:08,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd431108-bbb9-480f-b911-c963eb091d54/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE