./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu --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 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:41,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:41,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:57:41,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:41,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:41,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:41,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:41,406 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:41,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:41,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:41,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:41,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:41,411 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:41,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:41,412 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:41,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:41,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:41,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:41,415 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:41,416 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:41,417 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:41,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:41,419 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:41,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:41,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:41,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:41,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:41,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:41,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:41,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:41,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:41,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:41,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:41,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:41,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:41,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:41,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:41,429 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:41,429 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_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-19 07:57:41,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:41,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:41,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:41,780 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:41,781 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:41,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:57:45,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:45,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:45,389 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:57:45,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/4f0a2a43d/e4b3d71436f94214b677a2ed9751f9b4/FLAG097c0f186 [2023-11-19 07:57:45,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/4f0a2a43d/e4b3d71436f94214b677a2ed9751f9b4 [2023-11-19 07:57:45,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:45,425 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:45,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:45,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:45,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:45,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:45" (1/1) ... [2023-11-19 07:57:45,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b3737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:45, skipping insertion in model container [2023-11-19 07:57:45,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:45" (1/1) ... [2023-11-19 07:57:45,491 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:45,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:45,958 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:46,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:46,100 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:46,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46 WrapperNode [2023-11-19 07:57:46,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:46,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:46,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:46,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:46,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,193 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-19 07:57:46,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:46,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:46,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:46,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:46,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:46,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:46,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:46,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:46,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (1/1) ... [2023-11-19 07:57:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:46,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:46,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:57:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:57:46,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:57:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:46,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:46,380 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:46,545 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:46,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:46,747 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:46,768 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:46,768 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:57:46,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:46 BoogieIcfgContainer [2023-11-19 07:57:46,773 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:46,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:46,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:46,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:46,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:45" (1/3) ... [2023-11-19 07:57:46,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f7234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:46, skipping insertion in model container [2023-11-19 07:57:46,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:46" (2/3) ... [2023-11-19 07:57:46,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f7234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:46, skipping insertion in model container [2023-11-19 07:57:46,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:46" (3/3) ... [2023-11-19 07:57:46,785 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:57:46,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:46,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:57:46,809 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:46,877 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:57:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-19 07:57:47,026 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-19 07:57:47,026 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:47,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-19 07:57:47,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 155 flow [2023-11-19 07:57:47,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 68 transitions, 142 flow [2023-11-19 07:57:47,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:47,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 68 transitions, 142 flow [2023-11-19 07:57:47,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 68 transitions, 142 flow [2023-11-19 07:57:47,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 142 flow [2023-11-19 07:57:47,089 INFO L124 PetriNetUnfolderBase]: 3/68 cut-off events. [2023-11-19 07:57:47,089 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 3/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-19 07:57:47,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 480 [2023-11-19 07:57:50,711 INFO L134 LiptonReduction]: Checked pairs total: 817 [2023-11-19 07:57:50,712 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-11-19 07:57:50,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:50,736 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;@794ed552, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:50,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:57:50,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:50,738 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:57:50,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:50,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:50,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:57:50,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:57:50,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 297, now seen corresponding path program 1 times [2023-11-19 07:57:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217188354] [2023-11-19 07:57:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:50,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:50,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217188354] [2023-11-19 07:57:50,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217188354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:50,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:50,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:57:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636557318] [2023-11-19 07:57:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:50,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:50,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 147 [2023-11-19 07:57:50,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-19 07:57:50,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:50,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 147 [2023-11-19 07:57:50,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:51,001 INFO L124 PetriNetUnfolderBase]: 12/35 cut-off events. [2023-11-19 07:57:51,001 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:51,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 35 events. 12/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 87 event pairs, 12 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 62. Up to 36 conditions per place. [2023-11-19 07:57:51,005 INFO L140 encePairwiseOnDemand]: 145/147 looper letters, 11 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-11-19 07:57:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 50 flow [2023-11-19 07:57:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2023-11-19 07:57:51,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2023-11-19 07:57:51,027 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2023-11-19 07:57:51,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2023-11-19 07:57:51,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:51,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2023-11-19 07:57:51,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 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) [2023-11-19 07:57:51,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2023-11-19 07:57:51,053 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2023-11-19 07:57:51,055 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 2 states and 151 transitions. [2023-11-19 07:57:51,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 50 flow [2023-11-19 07:57:51,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:51,061 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 24 flow [2023-11-19 07:57:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-11-19 07:57:51,069 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2023-11-19 07:57:51,069 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 24 flow [2023-11-19 07:57:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-19 07:57:51,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:51,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:57:51,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:51,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:57:51,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 289710, now seen corresponding path program 1 times [2023-11-19 07:57:51,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273120649] [2023-11-19 07:57:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:51,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:51,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:51,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:51,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-19 07:57:51,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 07:57:51,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 07:57:51,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 07:57:51,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-19 07:57:51,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 07:57:51,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 07:57:51,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-19 07:57:51,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:51,246 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:57:51,254 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:57:51,255 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:57:51,272 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-19 07:57:51,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:57:51 BasicIcfg [2023-11-19 07:57:51,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:57:51,290 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:57:51,290 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:57:51,291 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:57:51,292 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:46" (3/4) ... [2023-11-19 07:57:51,294 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:57:51,296 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:57:51,298 INFO L158 Benchmark]: Toolchain (without parser) took 5871.90ms. Allocated memory was 176.2MB in the beginning and 218.1MB in the end (delta: 41.9MB). Free memory was 125.9MB in the beginning and 74.9MB in the end (delta: 51.0MB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,299 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 176.2MB. Free memory was 142.2MB in the beginning and 142.2MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:51,300 INFO L158 Benchmark]: CACSL2BoogieTranslator took 674.68ms. Allocated memory is still 176.2MB. Free memory was 125.9MB in the beginning and 107.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.93ms. Allocated memory is still 176.2MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,305 INFO L158 Benchmark]: Boogie Preprocessor took 70.13ms. Allocated memory is still 176.2MB. Free memory was 104.9MB in the beginning and 103.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,309 INFO L158 Benchmark]: RCFGBuilder took 501.65ms. Allocated memory is still 176.2MB. Free memory was 103.3MB in the beginning and 90.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,309 INFO L158 Benchmark]: TraceAbstraction took 4512.74ms. Allocated memory was 176.2MB in the beginning and 218.1MB in the end (delta: 41.9MB). Free memory was 89.7MB in the beginning and 74.9MB in the end (delta: 14.8MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2023-11-19 07:57:51,310 INFO L158 Benchmark]: Witness Printer took 5.71ms. Allocated memory is still 218.1MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:51,318 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 176.2MB. Free memory was 142.2MB in the beginning and 142.2MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 674.68ms. Allocated memory is still 176.2MB. Free memory was 125.9MB in the beginning and 107.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.93ms. Allocated memory is still 176.2MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.13ms. Allocated memory is still 176.2MB. Free memory was 104.9MB in the beginning and 103.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.65ms. Allocated memory is still 176.2MB. Free memory was 103.3MB in the beginning and 90.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4512.74ms. Allocated memory was 176.2MB in the beginning and 218.1MB in the end (delta: 41.9MB). Free memory was 89.7MB in the beginning and 74.9MB in the end (delta: 14.8MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Witness Printer took 5.71ms. Allocated memory is still 218.1MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 69 PlacesBefore, 17 PlacesAfterwards, 68 TransitionsBefore, 13 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 73 TotalNumberOfCompositions, 817 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 574, independent: 519, independent conditional: 0, independent unconditional: 519, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 307, independent: 290, independent conditional: 0, independent unconditional: 290, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 574, independent: 229, independent conditional: 0, independent unconditional: 229, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 307, unknown conditional: 0, unknown unconditional: 307] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={5:0}, mutex1={3:0}] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:57:51,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu --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 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:54,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:54,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:57:54,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:54,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:54,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:54,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:54,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:54,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:54,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:54,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:54,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:54,444 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:54,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:54,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:54,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:54,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:54,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:54,448 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:54,450 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:54,450 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:54,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:54,451 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:54,452 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:57:54,452 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:57:54,453 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:54,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:54,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:54,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:54,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:54,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:54,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:54,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:54,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:54,458 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:57:54,458 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:57:54,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:54,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:54,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:54,460 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:57:54,461 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:54,461 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_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9466f27e00e9305501eee0377198b5d988616fcd0740d7b6b046dc1579fad0d0 [2023-11-19 07:57:54,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:54,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:54,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:54,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:54,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:54,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:57:58,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:58,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:58,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/sv-benchmarks/c/goblint-regression/13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:57:58,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/0730900cf/cfd116cc1ce64edf8dde9830871a9188/FLAG4bea7f593 [2023-11-19 07:57:58,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/data/0730900cf/cfd116cc1ce64edf8dde9830871a9188 [2023-11-19 07:57:58,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:58,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:58,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:58,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:58,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:58,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:58" (1/1) ... [2023-11-19 07:57:58,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca1eb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:58, skipping insertion in model container [2023-11-19 07:57:58,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:58" (1/1) ... [2023-11-19 07:57:58,825 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:59,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:59,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:59,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:59,490 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:59,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59 WrapperNode [2023-11-19 07:57:59,491 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:59,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:59,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:59,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:59,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,584 INFO L138 Inliner]: procedures = 167, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-19 07:57:59,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:59,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:59,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:59,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:59,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:59,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:59,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:59,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:59,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (1/1) ... [2023-11-19 07:57:59,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:59,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:59,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:59,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:57:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:57:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:57:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:57:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:57:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:57:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:57:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:59,729 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:59,891 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:59,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:00,117 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:00,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:00,141 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:58:00,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:00 BoogieIcfgContainer [2023-11-19 07:58:00,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:00,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:00,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:00,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:00,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:58" (1/3) ... [2023-11-19 07:58:00,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f1824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:00, skipping insertion in model container [2023-11-19 07:58:00,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:59" (2/3) ... [2023-11-19 07:58:00,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f1824b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:00, skipping insertion in model container [2023-11-19 07:58:00,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:00" (3/3) ... [2023-11-19 07:58:00,160 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_unknown_2_neg.i [2023-11-19 07:58:00,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:00,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:58:00,185 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:00,260 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:58:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 155 flow [2023-11-19 07:58:00,357 INFO L124 PetriNetUnfolderBase]: 3/73 cut-off events. [2023-11-19 07:58:00,358 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:00,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-19 07:58:00,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 155 flow [2023-11-19 07:58:00,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 68 transitions, 142 flow [2023-11-19 07:58:00,371 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:00,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 68 transitions, 142 flow [2023-11-19 07:58:00,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 68 transitions, 142 flow [2023-11-19 07:58:00,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 142 flow [2023-11-19 07:58:00,406 INFO L124 PetriNetUnfolderBase]: 3/68 cut-off events. [2023-11-19 07:58:00,407 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 68 events. 3/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-19 07:58:00,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 464 [2023-11-19 07:58:06,353 INFO L134 LiptonReduction]: Checked pairs total: 809 [2023-11-19 07:58:06,353 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-11-19 07:58:06,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:06,376 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;@27933d61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:06,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:58:06,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:06,378 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:58:06,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:06,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:58:06,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:58:06,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,386 INFO L85 PathProgramCache]: Analyzing trace with hash 297, now seen corresponding path program 1 times [2023-11-19 07:58:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994531820] [2023-11-19 07:58:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:06,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:06,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:58:06,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:58:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:06,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:58:06,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:06,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:06,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:06,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994531820] [2023-11-19 07:58:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994531820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:06,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:06,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:58:06,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781561515] [2023-11-19 07:58:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:06,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:06,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:06,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 152 [2023-11-19 07:58:06,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-19 07:58:06,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:06,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 152 [2023-11-19 07:58:06,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:06,638 INFO L124 PetriNetUnfolderBase]: 12/35 cut-off events. [2023-11-19 07:58:06,638 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:58:06,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 35 events. 12/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 87 event pairs, 12 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 62. Up to 36 conditions per place. [2023-11-19 07:58:06,640 INFO L140 encePairwiseOnDemand]: 150/152 looper letters, 11 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-11-19 07:58:06,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 50 flow [2023-11-19 07:58:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:58:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 151 transitions. [2023-11-19 07:58:06,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2023-11-19 07:58:06,661 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 151 transitions. [2023-11-19 07:58:06,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 151 transitions. [2023-11-19 07:58:06,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:06,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 151 transitions. [2023-11-19 07:58:06,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 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) [2023-11-19 07:58:06,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-19 07:58:06,683 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-19 07:58:06,686 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 2 states and 151 transitions. [2023-11-19 07:58:06,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 50 flow [2023-11-19 07:58:06,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:06,691 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 24 flow [2023-11-19 07:58:06,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-11-19 07:58:06,700 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -3 predicate places. [2023-11-19 07:58:06,701 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 24 flow [2023-11-19 07:58:06,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 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) [2023-11-19 07:58:06,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:06,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:06,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:06,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 07:58:06,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash 292569, now seen corresponding path program 1 times [2023-11-19 07:58:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117035705] [2023-11-19 07:58:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:06,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:58:06,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:58:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:07,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:58:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:58:07,071 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 07:58:07,071 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:58:07,073 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-19 07:58:07,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 07:58:07,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 07:58:07,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 07:58:07,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-19 07:58:07,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 07:58:07,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 07:58:07,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-11-19 07:58:07,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:07,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:07,277 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:58:07,283 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:58:07,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:58:07,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-19 07:58:07,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:58:07 BasicIcfg [2023-11-19 07:58:07,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:58:07,306 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:58:07,306 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:58:07,306 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:58:07,307 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:00" (3/4) ... [2023-11-19 07:58:07,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:58:07,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:58:07,315 INFO L158 Benchmark]: Toolchain (without parser) took 8576.42ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.6MB in the beginning and 41.5MB in the end (delta: 9.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,316 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 52.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:07,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.41ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 30.6MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.69ms. Allocated memory is still 75.5MB. Free memory was 30.6MB in the beginning and 53.4MB in the end (delta: -22.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,324 INFO L158 Benchmark]: Boogie Preprocessor took 35.10ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 52.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,325 INFO L158 Benchmark]: RCFGBuilder took 522.99ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 38.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,327 INFO L158 Benchmark]: TraceAbstraction took 7156.88ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.3MB in the beginning and 42.2MB in the end (delta: -4.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,329 INFO L158 Benchmark]: Witness Printer took 7.24ms. Allocated memory is still 92.3MB. Free memory was 42.2MB in the beginning and 41.5MB in the end (delta: 742.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:07,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 52.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.41ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 30.6MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.69ms. Allocated memory is still 75.5MB. Free memory was 30.6MB in the beginning and 53.4MB in the end (delta: -22.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.10ms. Allocated memory is still 75.5MB. Free memory was 53.4MB in the beginning and 52.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.99ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 38.0MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7156.88ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 37.3MB in the beginning and 42.2MB in the end (delta: -4.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 7.24ms. Allocated memory is still 92.3MB. Free memory was 42.2MB in the beginning and 41.5MB in the end (delta: 742.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 69 PlacesBefore, 17 PlacesAfterwards, 68 TransitionsBefore, 13 TransitionsAfterwards, 464 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 78 TotalNumberOfCompositions, 809 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 499, independent: 445, independent conditional: 0, independent unconditional: 445, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 296, independent: 274, independent conditional: 0, independent unconditional: 274, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 499, independent: 171, independent conditional: 0, independent unconditional: 171, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 296, unknown conditional: 0, unknown unconditional: 296] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L682] 0 int glob1 = 0; [L683] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L697] 0 pthread_t id; [L698] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [glob1=0, id={16387:0}, mutex1={3:0}] [L685] 1 int t = __VERIFIER_nondet_int(); [L687] COND TRUE 1 t == 42 [L688] 1 glob1 = 1 [L690] 1 t = glob1 [L691] CALL 1 __VERIFIER_assert(!(t == 1)) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "13-privatized_18-first-reads_unknown_2_neg.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [glob1=1, mutex1={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:58:07,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cd341c5-7aae-4df8-b551-e47279aef750/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample