./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.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_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/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_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/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_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:02,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:02,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:16:02,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:02,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:02,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:02,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:02,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:02,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:02,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:02,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:02,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:02,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:02,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:02,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:02,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:02,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:02,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:02,562 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:16:02,563 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:16:02,563 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:16:02,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:02,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:16:02,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:16:02,566 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:02,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:02,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:02,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:02,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:02,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:02,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:02,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:02,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:02,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:02,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:02,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:02,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:02,574 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:02,574 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_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 [2023-11-12 02:16:02,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:02,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:02,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:02,918 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:02,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:02,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-11-12 02:16:06,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:06,408 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:06,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/sv-benchmarks/c/pthread-wmm/safe016_rmo.oepc.i [2023-11-12 02:16:06,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/data/a02db39d6/e3c5f9da405e4a0882b56e93ed0ada05/FLAG22ec5edf5 [2023-11-12 02:16:06,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/data/a02db39d6/e3c5f9da405e4a0882b56e93ed0ada05 [2023-11-12 02:16:06,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:06,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:06,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:06,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:06,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:06,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:06" (1/1) ... [2023-11-12 02:16:06,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467012a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:06, skipping insertion in model container [2023-11-12 02:16:06,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:06" (1/1) ... [2023-11-12 02:16:06,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:07,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:07,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:07,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:07,149 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:16:07,150 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:16:07,158 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:07,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07 WrapperNode [2023-11-12 02:16:07,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:07,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:07,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:07,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:07,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,246 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2023-11-12 02:16:07,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:07,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:07,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:07,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:07,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:07,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:07,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:07,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:07,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (1/1) ... [2023-11-12 02:16:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:07,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:07,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391bb43-175a-4d2c-93d3-6d387d9fb2a5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:16:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:16:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:16:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:16:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:16:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:16:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:16:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:16:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:16:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:16:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:16:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:16:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:16:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:16:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:16:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:07,435 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 02:16:07,596 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:07,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:08,373 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:09,117 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:09,117 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:16:09,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:09 BoogieIcfgContainer [2023-11-12 02:16:09,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:09,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:09,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:09,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:09,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:06" (1/3) ... [2023-11-12 02:16:09,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:09, skipping insertion in model container [2023-11-12 02:16:09,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:07" (2/3) ... [2023-11-12 02:16:09,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626a1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:09, skipping insertion in model container [2023-11-12 02:16:09,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:09" (3/3) ... [2023-11-12 02:16:09,130 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-11-12 02:16:09,151 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:09,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-11-12 02:16:09,152 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:16:09,364 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:16:09,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 204 transitions, 424 flow [2023-11-12 02:16:09,527 INFO L124 PetriNetUnfolderBase]: 3/200 cut-off events. [2023-11-12 02:16:09,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 200 events. 3/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 297 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2023-11-12 02:16:09,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 204 transitions, 424 flow [2023-11-12 02:16:09,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 200 transitions, 412 flow [2023-11-12 02:16:09,546 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:16:09,556 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 200 transitions, 412 flow [2023-11-12 02:16:09,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 200 transitions, 412 flow [2023-11-12 02:16:09,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 200 transitions, 412 flow [2023-11-12 02:16:09,628 INFO L124 PetriNetUnfolderBase]: 3/200 cut-off events. [2023-11-12 02:16:09,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:09,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 200 events. 3/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 293 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2023-11-12 02:16:09,637 INFO L119 LiptonReduction]: Number of co-enabled transitions 8884 [2023-11-12 02:16:54,706 INFO L134 LiptonReduction]: Checked pairs total: 39442 [2023-11-12 02:16:54,707 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-12 02:16:54,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:54,731 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;@182d67f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:54,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-12 02:16:54,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:16:54,734 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:16:54,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:54,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:54,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:16:54,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 02:16:54,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1128, now seen corresponding path program 1 times [2023-11-12 02:16:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209723895] [2023-11-12 02:16:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:54,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:54,919 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 02:16:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209723895] [2023-11-12 02:16:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209723895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:16:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079001034] [2023-11-12 02:16:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:16:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:54,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:16:54,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:16:54,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 376 [2023-11-12 02:16:54,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:54,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:16:54,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 376 [2023-11-12 02:16:54,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand