./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_rmo.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_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/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_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/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_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/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 fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:24,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:24,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:19:24,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:24,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:24,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:24,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:24,353 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:24,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:24,355 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:24,356 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:24,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:24,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:24,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:24,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:24,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:24,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:24,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:24,361 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:19:24,361 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:19:24,362 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:19:24,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:24,368 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:19:24,368 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:19:24,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:24,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:24,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:24,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:24,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:24,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:24,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:24,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:24,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:19:24,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:19:24,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:24,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:24,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:24,378 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:24,379 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_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 [2023-11-12 02:19:24,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:19:24,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:19:24,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:19:24,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:19:24,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:19:24,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe015_rmo.i [2023-11-12 02:19:27,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:28,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:28,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/sv-benchmarks/c/pthread-wmm/safe015_rmo.i [2023-11-12 02:19:28,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/data/70f21f347/18b1eadcf2ab45e6987137153d3437cc/FLAGcc2a929ce [2023-11-12 02:19:28,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/data/70f21f347/18b1eadcf2ab45e6987137153d3437cc [2023-11-12 02:19:28,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:28,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:28,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:28,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:28,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:28,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:28,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5585225a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28, skipping insertion in model container [2023-11-12 02:19:28,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:28,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:28,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:28,859 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:28,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:28,973 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:19:28,973 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:19:28,982 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:28,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28 WrapperNode [2023-11-12 02:19:28,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:28,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:28,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:28,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:28,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,054 INFO L138 Inliner]: procedures = 176, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-11-12 02:19:29,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:29,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:29,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:29,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:29,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:29,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:29,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:29,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:29,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (1/1) ... [2023-11-12 02:19:29,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:29,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:29,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4d2221b-c7d2-45d4-9f7d-b734a835fbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:19:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:19:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:19:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:19:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:19:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:19:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:19:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:19:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:19:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:19:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:19:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:19:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:29,235 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 02:19:29,458 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:29,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:30,175 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:31,056 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:31,056 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:19:31,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:31 BoogieIcfgContainer [2023-11-12 02:19:31,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:31,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:31,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:31,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:31,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:28" (1/3) ... [2023-11-12 02:19:31,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533e5236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:31, skipping insertion in model container [2023-11-12 02:19:31,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:28" (2/3) ... [2023-11-12 02:19:31,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533e5236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:31, skipping insertion in model container [2023-11-12 02:19:31,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:31" (3/3) ... [2023-11-12 02:19:31,075 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_rmo.i [2023-11-12 02:19:31,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:31,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-12 02:19:31,099 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:19:31,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:19:31,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 196 transitions, 404 flow [2023-11-12 02:19:31,504 INFO L124 PetriNetUnfolderBase]: 3/193 cut-off events. [2023-11-12 02:19:31,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:19:31,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 193 events. 3/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-12 02:19:31,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 196 transitions, 404 flow [2023-11-12 02:19:31,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 193 transitions, 395 flow [2023-11-12 02:19:31,524 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:31,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 193 transitions, 395 flow [2023-11-12 02:19:31,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 193 transitions, 395 flow [2023-11-12 02:19:31,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 193 transitions, 395 flow [2023-11-12 02:19:31,626 INFO L124 PetriNetUnfolderBase]: 3/193 cut-off events. [2023-11-12 02:19:31,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:19:31,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 193 events. 3/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 352 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-12 02:19:31,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 9584 [2023-11-12 02:20:01,623 INFO L134 LiptonReduction]: Checked pairs total: 54923 [2023-11-12 02:20:01,623 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-11-12 02:20:01,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:01,647 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;@7fab8b7c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:01,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-12 02:20:01,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:01,650 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:20:01,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:01,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:01,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:20:01,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 02:20:01,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1206, now seen corresponding path program 1 times [2023-11-12 02:20:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:01,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025303070] [2023-11-12 02:20:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:01,802 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 02:20:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:01,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025303070] [2023-11-12 02:20:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025303070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:20:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621492195] [2023-11-12 02:20:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:20:01,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:20:01,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:20:01,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 353 [2023-11-12 02:20:01,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:01,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:01,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 353 [2023-11-12 02:20:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:09,782 INFO L124 PetriNetUnfolderBase]: 26588/37077 cut-off events. [2023-11-12 02:20:09,782 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-12 02:20:09,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74203 conditions, 37077 events. 26588/37077 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2952. Compared 260998 event pairs, 26588 based on Foata normal form. 0/15173 useless extension candidates. Maximal degree in co-relation 74192. Up to 36988 conditions per place. [2023-11-12 02:20:10,046 INFO L140 encePairwiseOnDemand]: 316/353 looper letters, 47 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2023-11-12 02:20:10,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 205 flow [2023-11-12 02:20:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:20:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:20:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 350 transitions. [2023-11-12 02:20:10,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49575070821529743 [2023-11-12 02:20:10,068 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 350 transitions. [2023-11-12 02:20:10,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 350 transitions. [2023-11-12 02:20:10,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:10,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 350 transitions. [2023-11-12 02:20:10,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 02:20:10,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states 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 02:20:10,086 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states 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 02:20:10,088 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 187 flow. Second operand 2 states and 350 transitions. [2023-11-12 02:20:10,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 205 flow [2023-11-12 02:20:10,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:10,099 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 108 flow [2023-11-12 02:20:10,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-11-12 02:20:10,106 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -39 predicate places. [2023-11-12 02:20:10,107 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 108 flow [2023-11-12 02:20:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:10,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:10,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:20:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:10,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 02:20:10,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash 36969794, now seen corresponding path program 1 times [2023-11-12 02:20:10,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368175326] [2023-11-12 02:20:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:10,453 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 02:20:10,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:10,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368175326] [2023-11-12 02:20:10,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368175326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:10,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:10,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:10,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869838384] [2023-11-12 02:20:10,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:10,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:10,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:10,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 353 [2023-11-12 02:20:10,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 02:20:10,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:10,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 353 [2023-11-12 02:20:10,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:14,855 INFO L124 PetriNetUnfolderBase]: 18232/26901 cut-off events. [2023-11-12 02:20:14,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53444 conditions, 26901 events. 18232/26901 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1773. Compared 186970 event pairs, 11400 based on Foata normal form. 0/14843 useless extension candidates. Maximal degree in co-relation 53441. Up to 16352 conditions per place. [2023-11-12 02:20:15,007 INFO L140 encePairwiseOnDemand]: 331/353 looper letters, 55 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2023-11-12 02:20:15,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 274 flow [2023-11-12 02:20:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-12 02:20:15,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42681775259678945 [2023-11-12 02:20:15,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-12 02:20:15,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-12 02:20:15,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:15,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-12 02:20:15,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:15,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:15,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:15,027 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 108 flow. Second operand 3 states and 452 transitions. [2023-11-12 02:20:15,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 274 flow [2023-11-12 02:20:15,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:15,031 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 198 flow [2023-11-12 02:20:15,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-12 02:20:15,033 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -38 predicate places. [2023-11-12 02:20:15,033 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 198 flow [2023-11-12 02:20:15,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 02:20:15,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:15,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:20:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:20:15,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 02:20:15,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash 36969795, now seen corresponding path program 1 times [2023-11-12 02:20:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201700725] [2023-11-12 02:20:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:15,254 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 02:20:15,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201700725] [2023-11-12 02:20:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201700725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:15,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999964186] [2023-11-12 02:20:15,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:15,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:15,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:15,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 353 [2023-11-12 02:20:15,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:20:15,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:15,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 353 [2023-11-12 02:20:15,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:16,912 INFO L124 PetriNetUnfolderBase]: 5551/8578 cut-off events. [2023-11-12 02:20:16,912 INFO L125 PetriNetUnfolderBase]: For 2984/3108 co-relation queries the response was YES. [2023-11-12 02:20:16,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24466 conditions, 8578 events. 5551/8578 cut-off events. For 2984/3108 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 54785 event pairs, 3923 based on Foata normal form. 2655/9959 useless extension candidates. Maximal degree in co-relation 24461. Up to 8030 conditions per place. [2023-11-12 02:20:16,980 INFO L140 encePairwiseOnDemand]: 341/353 looper letters, 41 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-12 02:20:16,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 260 flow [2023-11-12 02:20:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-11-12 02:20:16,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41076487252124644 [2023-11-12 02:20:16,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-11-12 02:20:16,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-11-12 02:20:16,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:16,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-11-12 02:20:16,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 02:20:16,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:17,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:17,001 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 198 flow. Second operand 3 states and 435 transitions. [2023-11-12 02:20:17,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 260 flow [2023-11-12 02:20:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:17,029 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 156 flow [2023-11-12 02:20:17,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-12 02:20:17,031 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -49 predicate places. [2023-11-12 02:20:17,032 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 156 flow [2023-11-12 02:20:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 02:20:17,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:17,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:17,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 02:20:17,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1137215754, now seen corresponding path program 1 times [2023-11-12 02:20:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:17,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877140366] [2023-11-12 02:20:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:17,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:17,437 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 02:20:17,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877140366] [2023-11-12 02:20:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877140366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:17,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:17,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878984022] [2023-11-12 02:20:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:17,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:17,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:17,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 353 [2023-11-12 02:20:17,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 02:20:17,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:17,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 353 [2023-11-12 02:20:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:18,988 INFO L124 PetriNetUnfolderBase]: 5324/8411 cut-off events. [2023-11-12 02:20:18,988 INFO L125 PetriNetUnfolderBase]: For 1180/1244 co-relation queries the response was YES. [2023-11-12 02:20:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21917 conditions, 8411 events. 5324/8411 cut-off events. For 1180/1244 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 55205 event pairs, 1915 based on Foata normal form. 0/6224 useless extension candidates. Maximal degree in co-relation 21912. Up to 5973 conditions per place. [2023-11-12 02:20:19,051 INFO L140 encePairwiseOnDemand]: 349/353 looper letters, 63 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-11-12 02:20:19,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 370 flow [2023-11-12 02:20:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-12 02:20:19,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42492917847025496 [2023-11-12 02:20:19,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-12 02:20:19,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-12 02:20:19,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:19,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-12 02:20:19,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:19,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:19,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 02:20:19,063 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 156 flow. Second operand 3 states and 450 transitions. [2023-11-12 02:20:19,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 370 flow [2023-11-12 02:20:19,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:19,068 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 168 flow [2023-11-12 02:20:19,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-12 02:20:19,071 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -47 predicate places. [2023-11-12 02:20:19,071 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 168 flow [2023-11-12 02:20:19,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 02:20:19,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:19,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:20:19,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-12 02:20:19,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1137215377, now seen corresponding path program 1 times [2023-11-12 02:20:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:19,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177808796] [2023-11-12 02:20:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat