./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:57:29,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:57:29,201 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:57:29,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:57:29,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:57:29,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:57:29,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:57:29,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:57:29,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:57:29,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:57:29,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:57:29,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:57:29,236 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:57:29,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:57:29,237 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:57:29,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:57:29,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:57:29,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:57:29,239 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:57:29,240 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:57:29,240 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:57:29,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:57:29,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:57:29,242 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:57:29,242 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:57:29,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:57:29,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:57:29,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:57:29,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:57:29,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:29,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:57:29,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:57:29,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:57:29,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:57:29,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:57:29,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:57:29,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:57:29,248 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:57:29,249 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_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b69d29db6700923687b32c5d8fab6e8f05fe2198d87348098263d957793e472 [2023-11-06 21:57:29,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:57:29,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:57:29,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:57:29,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:57:29,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:57:29,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2023-11-06 21:57:32,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:57:33,053 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:57:33,053 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/sv-benchmarks/c/pthread-wmm/safe016_power.opt.i [2023-11-06 21:57:33,079 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/data/bb2a04b3b/555a1ead6f954130ae5b90c6952f3549/FLAG0b8b351c0 [2023-11-06 21:57:33,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/data/bb2a04b3b/555a1ead6f954130ae5b90c6952f3549 [2023-11-06 21:57:33,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:57:33,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:57:33,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:33,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:57:33,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:57:33,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:33,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233ff27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33, skipping insertion in model container [2023-11-06 21:57:33,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:33,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:57:33,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:33,743 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:57:33,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:33,878 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:57:33,879 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:57:33,887 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:57:33,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33 WrapperNode [2023-11-06 21:57:33,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:33,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:33,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:57:33,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:57:33,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:33,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:33,993 INFO L138 Inliner]: procedures = 177, calls = 92, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 186 [2023-11-06 21:57:33,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:33,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:57:33,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:57:33,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:57:34,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:57:34,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:57:34,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:57:34,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:57:34,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (1/1) ... [2023-11-06 21:57:34,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:34,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:34,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:57:34,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba968af8-d6b7-4fd6-9ee8-ca30da2e3dad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:57:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:57:34,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:57:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:57:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:57:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:57:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:57:34,178 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:57:34,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:57:34,179 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:57:34,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:57:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:57:34,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:57:34,180 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 21:57:34,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 21:57:34,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:57:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:57:34,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:57:34,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:57:34,185 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:57:34,364 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:34,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:57:35,173 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:57:36,441 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:57:36,441 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:57:36,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:36 BoogieIcfgContainer [2023-11-06 21:57:36,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:57:36,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:57:36,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:57:36,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:57:36,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:33" (1/3) ... [2023-11-06 21:57:36,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c47a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:36, skipping insertion in model container [2023-11-06 21:57:36,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:33" (2/3) ... [2023-11-06 21:57:36,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c47a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:36, skipping insertion in model container [2023-11-06 21:57:36,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:36" (3/3) ... [2023-11-06 21:57:36,458 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2023-11-06 21:57:36,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:57:36,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-06 21:57:36,480 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:57:36,691 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:57:36,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 218 transitions, 452 flow [2023-11-06 21:57:36,900 INFO L124 PetriNetUnfolderBase]: 3/214 cut-off events. [2023-11-06 21:57:36,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:57:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 3/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 381 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 21:57:36,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 218 transitions, 452 flow [2023-11-06 21:57:36,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 214 transitions, 440 flow [2023-11-06 21:57:36,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:57:36,951 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 214 transitions, 440 flow [2023-11-06 21:57:36,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 214 transitions, 440 flow [2023-11-06 21:57:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 214 transitions, 440 flow [2023-11-06 21:57:37,109 INFO L124 PetriNetUnfolderBase]: 3/214 cut-off events. [2023-11-06 21:57:37,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:57:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 3/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 374 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-11-06 21:57:37,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 11886 [2023-11-06 21:57:57,324 WARN L293 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 257 DAG size of output: 254 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:58:17,472 INFO L134 LiptonReduction]: Checked pairs total: 70772 [2023-11-06 21:58:17,472 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-06 21:58:17,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:17,508 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;@2a40e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:17,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2023-11-06 21:58:17,509 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:17,510 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:58:17,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:17,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:17,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:58:17,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2023-11-06 21:58:17,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1456, now seen corresponding path program 1 times [2023-11-06 21:58:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:17,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819235372] [2023-11-06 21:58:17,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:17,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:17,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819235372] [2023-11-06 21:58:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819235372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:58:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310630026] [2023-11-06 21:58:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:58:17,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:58:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:58:17,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 386 [2023-11-06 21:58:17,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 208 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) [2023-11-06 21:58:17,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:17,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 386 [2023-11-06 21:58:17,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand