./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe022_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:50,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:50,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:28:50,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:50,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:50,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:50,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:50,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:50,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:50,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:50,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:50,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:50,201 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:50,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:50,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:50,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:50,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:50,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:50,206 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:28:50,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:28:50,207 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:28:50,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:50,208 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:28:50,209 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:28:50,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:50,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:50,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:50,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:50,213 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:50,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:50,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:50,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:50,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:50,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:50,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:50,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:50,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:50,218 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:50,218 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_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc87f4ca115dcc389a4b05cbc106fd8bac1a9e17a58d50108d65580024dc2f5 [2023-11-12 02:28:50,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:50,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:50,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:50,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:50,563 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:50,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe022_tso.i [2023-11-12 02:28:53,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:54,056 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:54,057 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/sv-benchmarks/c/pthread-wmm/safe022_tso.i [2023-11-12 02:28:54,075 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/data/12c9f8a0f/5e61d91513934667bc6121cc19026d2c/FLAG3798db354 [2023-11-12 02:28:54,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/data/12c9f8a0f/5e61d91513934667bc6121cc19026d2c [2023-11-12 02:28:54,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:54,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:54,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:54,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:54,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:54,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd53972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54, skipping insertion in model container [2023-11-12 02:28:54,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,176 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:54,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:54,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:54,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:54,789 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:54,789 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:54,798 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:54,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54 WrapperNode [2023-11-12 02:28:54,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:54,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:54,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:54,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:54,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,856 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-12 02:28:54,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:54,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:54,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:54,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:54,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:54,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:54,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:54,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:54,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:54,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:55,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:28:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:28:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:28:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:28:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:28:55,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:55,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:28:55,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:55,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:55,089 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:28:55,283 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:55,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:55,518 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:55,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:55,526 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:28:55,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:55 BoogieIcfgContainer [2023-11-12 02:28:55,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:55,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:55,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:55,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:55,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:54" (1/3) ... [2023-11-12 02:28:55,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f39f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:55, skipping insertion in model container [2023-11-12 02:28:55,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54" (2/3) ... [2023-11-12 02:28:55,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f39f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:55, skipping insertion in model container [2023-11-12 02:28:55,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:55" (3/3) ... [2023-11-12 02:28:55,540 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2023-11-12 02:28:55,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:55,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:28:55,560 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:55,616 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:28:55,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 84 transitions, 176 flow [2023-11-12 02:28:55,707 INFO L124 PetriNetUnfolderBase]: 3/82 cut-off events. [2023-11-12 02:28:55,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:55,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 3/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-11-12 02:28:55,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 84 transitions, 176 flow [2023-11-12 02:28:55,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 77 transitions, 160 flow [2023-11-12 02:28:55,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:55,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 160 flow [2023-11-12 02:28:55,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 160 flow [2023-11-12 02:28:55,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 160 flow [2023-11-12 02:28:55,762 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2023-11-12 02:28:55,762 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:55,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-12 02:28:55,766 INFO L119 LiptonReduction]: Number of co-enabled transitions 972 [2023-11-12 02:28:58,766 INFO L134 LiptonReduction]: Checked pairs total: 2014 [2023-11-12 02:28:58,766 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-11-12 02:28:58,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:28:58,801 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;@345010f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:28:58,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-12 02:28:58,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:28:58,805 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:28:58,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:58,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:58,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:28:58,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:28:58,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 317, now seen corresponding path program 1 times [2023-11-12 02:28:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323325737] [2023-11-12 02:28:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:58,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323325737] [2023-11-12 02:28:58,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323325737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:28:58,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733918436] [2023-11-12 02:28:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:28:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:28:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:28:59,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-11-12 02:28:59,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:59,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-11-12 02:28:59,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:59,104 INFO L124 PetriNetUnfolderBase]: 44/91 cut-off events. [2023-11-12 02:28:59,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:59,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 91 events. 44/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 306 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 180. Up to 88 conditions per place. [2023-11-12 02:28:59,108 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 11 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-11-12 02:28:59,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 54 flow [2023-11-12 02:28:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:28:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:28:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-11-12 02:28:59,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48044692737430167 [2023-11-12 02:28:59,126 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-11-12 02:28:59,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-11-12 02:28:59,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:59,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-11-12 02:28:59,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,145 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,147 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 2 states and 172 transitions. [2023-11-12 02:28:59,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 54 flow [2023-11-12 02:28:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:28:59,152 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 30 flow [2023-11-12 02:28:59,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-11-12 02:28:59,158 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -5 predicate places. [2023-11-12 02:28:59,158 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 30 flow [2023-11-12 02:28:59,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:59,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:28:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:28:59,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:28:59,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash 642967872, now seen corresponding path program 1 times [2023-11-12 02:28:59,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:59,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869925159] [2023-11-12 02:28:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:28:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:28:59,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:28:59,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869925159] [2023-11-12 02:28:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869925159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:28:59,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:28:59,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:28:59,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236207081] [2023-11-12 02:28:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:28:59,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:28:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:28:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:28:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:28:59,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 179 [2023-11-12 02:28:59,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:28:59,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 179 [2023-11-12 02:28:59,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:28:59,889 INFO L124 PetriNetUnfolderBase]: 34/78 cut-off events. [2023-11-12 02:28:59,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:59,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 78 events. 34/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 255 event pairs, 6 based on Foata normal form. 3/75 useless extension candidates. Maximal degree in co-relation 157. Up to 53 conditions per place. [2023-11-12 02:28:59,892 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 13 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-11-12 02:28:59,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 72 flow [2023-11-12 02:28:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:28:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:28:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2023-11-12 02:28:59,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39385474860335196 [2023-11-12 02:28:59,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 282 transitions. [2023-11-12 02:28:59,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 282 transitions. [2023-11-12 02:28:59,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:28:59,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 282 transitions. [2023-11-12 02:28:59,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,912 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 30 flow. Second operand 4 states and 282 transitions. [2023-11-12 02:28:59,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 72 flow [2023-11-12 02:28:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:28:59,917 INFO L231 Difference]: Finished difference. Result has 23 places, 13 transitions, 42 flow [2023-11-12 02:28:59,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2023-11-12 02:28:59,918 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-11-12 02:28:59,919 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 42 flow [2023-11-12 02:28:59,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:28:59,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:28:59,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:59,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:28:59,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:28:59,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:28:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1542834607, now seen corresponding path program 1 times [2023-11-12 02:28:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:28:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994111931] [2023-11-12 02:28:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:28:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:28:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994111931] [2023-11-12 02:29:00,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994111931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702068170] [2023-11-12 02:29:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:00,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 179 [2023-11-12 02:29:00,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:00,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 179 [2023-11-12 02:29:00,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:00,338 INFO L124 PetriNetUnfolderBase]: 27/62 cut-off events. [2023-11-12 02:29:00,339 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-12 02:29:00,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 62 events. 27/62 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 178 event pairs, 9 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 150. Up to 54 conditions per place. [2023-11-12 02:29:00,340 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 10 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-11-12 02:29:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 14 transitions, 66 flow [2023-11-12 02:29:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2023-11-12 02:29:00,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924581005586592 [2023-11-12 02:29:00,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 281 transitions. [2023-11-12 02:29:00,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 281 transitions. [2023-11-12 02:29:00,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:00,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 281 transitions. [2023-11-12 02:29:00,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,349 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,349 INFO L175 Difference]: Start difference. First operand has 23 places, 13 transitions, 42 flow. Second operand 4 states and 281 transitions. [2023-11-12 02:29:00,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 14 transitions, 66 flow [2023-11-12 02:29:00,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:29:00,351 INFO L231 Difference]: Finished difference. Result has 22 places, 12 transitions, 36 flow [2023-11-12 02:29:00,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=36, PETRI_PLACES=22, PETRI_TRANSITIONS=12} [2023-11-12 02:29:00,353 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2023-11-12 02:29:00,353 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 12 transitions, 36 flow [2023-11-12 02:29:00,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:00,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:00,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:00,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:29:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1542855077, now seen corresponding path program 1 times [2023-11-12 02:29:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:00,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930464571] [2023-11-12 02:29:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:00,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930464571] [2023-11-12 02:29:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930464571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081984457] [2023-11-12 02:29:00,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:00,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:00,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:00,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:00,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-11-12 02:29:00,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:00,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-11-12 02:29:00,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:00,593 INFO L124 PetriNetUnfolderBase]: 56/111 cut-off events. [2023-11-12 02:29:00,593 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:29:00,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 111 events. 56/111 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 312 event pairs, 11 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 255. Up to 48 conditions per place. [2023-11-12 02:29:00,595 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 19 selfloop transitions, 6 changer transitions 0/25 dead transitions. [2023-11-12 02:29:00,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 120 flow [2023-11-12 02:29:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:29:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-11-12 02:29:00,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324022346368715 [2023-11-12 02:29:00,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-11-12 02:29:00,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-11-12 02:29:00,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:00,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-11-12 02:29:00,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,603 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,603 INFO L175 Difference]: Start difference. First operand has 22 places, 12 transitions, 36 flow. Second operand 5 states and 387 transitions. [2023-11-12 02:29:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 120 flow [2023-11-12 02:29:00,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:00,605 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 68 flow [2023-11-12 02:29:00,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2023-11-12 02:29:00,606 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-12 02:29:00,606 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 68 flow [2023-11-12 02:29:00,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:00,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:00,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:29:00,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:29:00,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash -583869703, now seen corresponding path program 1 times [2023-11-12 02:29:00,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296541553] [2023-11-12 02:29:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:00,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296541553] [2023-11-12 02:29:00,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296541553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921753908] [2023-11-12 02:29:00,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:00,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:00,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-11-12 02:29:00,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:00,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-11-12 02:29:00,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:00,795 INFO L124 PetriNetUnfolderBase]: 54/113 cut-off events. [2023-11-12 02:29:00,795 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-11-12 02:29:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 113 events. 54/113 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 339 event pairs, 23 based on Foata normal form. 8/121 useless extension candidates. Maximal degree in co-relation 317. Up to 40 conditions per place. [2023-11-12 02:29:00,797 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 14 selfloop transitions, 3 changer transitions 6/23 dead transitions. [2023-11-12 02:29:00,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 132 flow [2023-11-12 02:29:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-11-12 02:29:00,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43575418994413406 [2023-11-12 02:29:00,801 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-11-12 02:29:00,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-11-12 02:29:00,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:00,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-11-12 02:29:00,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,806 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,806 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 68 flow. Second operand 4 states and 312 transitions. [2023-11-12 02:29:00,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 132 flow [2023-11-12 02:29:00,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:00,808 INFO L231 Difference]: Finished difference. Result has 31 places, 12 transitions, 63 flow [2023-11-12 02:29:00,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=31, PETRI_TRANSITIONS=12} [2023-11-12 02:29:00,810 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-11-12 02:29:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 12 transitions, 63 flow [2023-11-12 02:29:00,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:00,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:00,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:00,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:29:00,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -902678543, now seen corresponding path program 1 times [2023-11-12 02:29:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:00,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380541647] [2023-11-12 02:29:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:00,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380541647] [2023-11-12 02:29:00,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380541647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815153856] [2023-11-12 02:29:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:00,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:00,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-11-12 02:29:00,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 12 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:00,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:00,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-11-12 02:29:00,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,004 INFO L124 PetriNetUnfolderBase]: 15/46 cut-off events. [2023-11-12 02:29:01,005 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-12 02:29:01,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 46 events. 15/46 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 4 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 148. Up to 16 conditions per place. [2023-11-12 02:29:01,006 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 14 selfloop transitions, 4 changer transitions 1/21 dead transitions. [2023-11-12 02:29:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 137 flow [2023-11-12 02:29:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-11-12 02:29:01,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371508379888268 [2023-11-12 02:29:01,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-11-12 02:29:01,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-11-12 02:29:01,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-11-12 02:29:01,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,014 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,014 INFO L175 Difference]: Start difference. First operand has 31 places, 12 transitions, 63 flow. Second operand 4 states and 313 transitions. [2023-11-12 02:29:01,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 137 flow [2023-11-12 02:29:01,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 109 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-12 02:29:01,016 INFO L231 Difference]: Finished difference. Result has 28 places, 14 transitions, 69 flow [2023-11-12 02:29:01,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2023-11-12 02:29:01,018 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-12 02:29:01,018 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 69 flow [2023-11-12 02:29:01,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:01,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:01,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:29:01,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:29:01,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2035531143, now seen corresponding path program 1 times [2023-11-12 02:29:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:01,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447691499] [2023-11-12 02:29:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447691499] [2023-11-12 02:29:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447691499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:01,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953318659] [2023-11-12 02:29:01,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:01,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:01,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-11-12 02:29:01,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:01,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-11-12 02:29:01,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,252 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2023-11-12 02:29:01,252 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2023-11-12 02:29:01,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 30 events. 8/30 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 2 based on Foata normal form. 5/34 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2023-11-12 02:29:01,253 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 9 selfloop transitions, 6 changer transitions 1/18 dead transitions. [2023-11-12 02:29:01,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 18 transitions, 119 flow [2023-11-12 02:29:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:29:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 383 transitions. [2023-11-12 02:29:01,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42793296089385474 [2023-11-12 02:29:01,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 383 transitions. [2023-11-12 02:29:01,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 383 transitions. [2023-11-12 02:29:01,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 383 transitions. [2023-11-12 02:29:01,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.6) internal successors, (383), 5 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,263 INFO L175 Difference]: Start difference. First operand has 28 places, 14 transitions, 69 flow. Second operand 5 states and 383 transitions. [2023-11-12 02:29:01,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 18 transitions, 119 flow [2023-11-12 02:29:01,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 106 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-12 02:29:01,267 INFO L231 Difference]: Finished difference. Result has 31 places, 14 transitions, 81 flow [2023-11-12 02:29:01,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=14} [2023-11-12 02:29:01,268 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2023-11-12 02:29:01,268 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 81 flow [2023-11-12 02:29:01,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:01,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:29:01,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-12 02:29:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1883902746, now seen corresponding path program 1 times [2023-11-12 02:29:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259295479] [2023-11-12 02:29:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:01,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259295479] [2023-11-12 02:29:01,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259295479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:01,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:01,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199151617] [2023-11-12 02:29:01,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:01,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-11-12 02:29:01,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:01,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-11-12 02:29:01,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,434 INFO L124 PetriNetUnfolderBase]: 7/27 cut-off events. [2023-11-12 02:29:01,435 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-12 02:29:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 27 events. 7/27 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 97. Up to 13 conditions per place. [2023-11-12 02:29:01,436 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-11-12 02:29:01,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 115 flow [2023-11-12 02:29:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:29:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-11-12 02:29:01,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329608938547486 [2023-11-12 02:29:01,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-11-12 02:29:01,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-11-12 02:29:01,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-11-12 02:29:01,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,447 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,447 INFO L175 Difference]: Start difference. First operand has 31 places, 14 transitions, 81 flow. Second operand 4 states and 310 transitions. [2023-11-12 02:29:01,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 115 flow [2023-11-12 02:29:01,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 81 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-12 02:29:01,451 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-11-12 02:29:01,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-11-12 02:29:01,455 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-11-12 02:29:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-11-12 02:29:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:01,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-12 02:29:01,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-12 02:29:01,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-12 02:29:01,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-12 02:29:01,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-12 02:29:01,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-12 02:29:01,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-12 02:29:01,461 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-12 02:29:01,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:29:01,461 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:01,465 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:29:01,465 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:29:01,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:29:01 BasicIcfg [2023-11-12 02:29:01,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:29:01,480 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:29:01,480 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:29:01,480 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:29:01,481 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:55" (3/4) ... [2023-11-12 02:29:01,483 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:29:01,487 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-12 02:29:01,488 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-12 02:29:01,495 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-12 02:29:01,495 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-12 02:29:01,495 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:29:01,496 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:29:01,587 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:29:01,587 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:29:01,587 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:29:01,588 INFO L158 Benchmark]: Toolchain (without parser) took 7493.98ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 73.6MB in the beginning and 77.0MB in the end (delta: -3.3MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,589 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:01,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.14ms. Allocated memory is still 119.5MB. Free memory was 73.6MB in the beginning and 53.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.59ms. Allocated memory is still 119.5MB. Free memory was 53.6MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,590 INFO L158 Benchmark]: Boogie Preprocessor took 69.93ms. Allocated memory is still 119.5MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:01,591 INFO L158 Benchmark]: RCFGBuilder took 599.77ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 114.7MB in the end (delta: -64.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,591 INFO L158 Benchmark]: TraceAbstraction took 5946.74ms. Allocated memory is still 151.0MB. Free memory was 113.4MB in the beginning and 81.2MB in the end (delta: 32.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,591 INFO L158 Benchmark]: Witness Printer took 107.89ms. Allocated memory is still 151.0MB. Free memory was 81.2MB in the beginning and 77.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:29:01,594 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 119.5MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.14ms. Allocated memory is still 119.5MB. Free memory was 73.6MB in the beginning and 53.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.59ms. Allocated memory is still 119.5MB. Free memory was 53.6MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.93ms. Allocated memory is still 119.5MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 599.77ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 50.1MB in the beginning and 114.7MB in the end (delta: -64.5MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5946.74ms. Allocated memory is still 151.0MB. Free memory was 113.4MB in the beginning and 81.2MB in the end (delta: 32.2MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Witness Printer took 107.89ms. Allocated memory is still 151.0MB. Free memory was 81.2MB in the beginning and 77.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 81 PlacesBefore, 24 PlacesAfterwards, 77 TransitionsBefore, 18 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 95 TotalNumberOfCompositions, 2014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1455, independent: 1375, independent conditional: 0, independent unconditional: 1375, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 574, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1455, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 574, unknown conditional: 0, unknown unconditional: 574] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 758]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 20 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=7, InterpolantAutomatonStates: 32, 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, 1.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:29:01,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e8e38c-6e8a-4f10-955c-eb6a8dae9648/bin/uautomizer-verify-uTZkv6EMXl/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