./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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_d5878bee-37e8-4216-aee8-3099b85b29cc/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 d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:35,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:35,712 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:36:35,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:35,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:35,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:35,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:35,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:35,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:35,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:35,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:35,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:35,772 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:35,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:35,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:35,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:35,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:35,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:35,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:36:35,777 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:36:35,777 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:36:35,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:35,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:35,779 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:35,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:35,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:35,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:35,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:35,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:35,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:35,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:35,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:35,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:35,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:35,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:35,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:35,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:35,786 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:35,786 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_d5878bee-37e8-4216-aee8-3099b85b29cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c [2023-11-19 07:36:36,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:36,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:36,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:36,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:36,158 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:36,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 07:36:39,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:39,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:39,674 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 07:36:39,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/9e7330ba7/a96664f7781843ec8cfb6a0254219367/FLAGae9ede1a3 [2023-11-19 07:36:39,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/9e7330ba7/a96664f7781843ec8cfb6a0254219367 [2023-11-19 07:36:39,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:39,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:39,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:39,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:39,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:39,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:39" (1/1) ... [2023-11-19 07:36:39,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bff231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:39, skipping insertion in model container [2023-11-19 07:36:39,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:39" (1/1) ... [2023-11-19 07:36:39,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:40,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:40,332 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:40,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:40,441 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:40,441 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:40,447 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:40,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40 WrapperNode [2023-11-19 07:36:40,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:40,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:40,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:40,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:40,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,507 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 127 [2023-11-19 07:36:40,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:40,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:40,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:40,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:40,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:40,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:40,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:40,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:40,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (1/1) ... [2023-11-19 07:36:40,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:40,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:40,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:36:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:36:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:36:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:40,628 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 07:36:40,764 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:40,766 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:41,098 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:41,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:41,180 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:41,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:41 BoogieIcfgContainer [2023-11-19 07:36:41,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:41,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:41,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:41,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:41,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:39" (1/3) ... [2023-11-19 07:36:41,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3c4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:41, skipping insertion in model container [2023-11-19 07:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:40" (2/3) ... [2023-11-19 07:36:41,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3c4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:41, skipping insertion in model container [2023-11-19 07:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:41" (3/3) ... [2023-11-19 07:36:41,196 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1-pthread.i [2023-11-19 07:36:41,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:41,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:36:41,217 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:41,309 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:41,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,420 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-11-19 07:36:41,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:41,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 9/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-19 07:36:41,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:41,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 121 transitions, 246 flow [2023-11-19 07:36:41,505 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-11-19 07:36:41,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:41,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 9/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-11-19 07:36:41,511 INFO L119 LiptonReduction]: Number of co-enabled transitions 2774 [2023-11-19 07:36:49,419 INFO L134 LiptonReduction]: Checked pairs total: 2464 [2023-11-19 07:36:49,419 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-11-19 07:36:49,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:49,452 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;@245a1579, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:49,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:36:49,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:49,459 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:36:49,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:49,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:49,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:36:49,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:36:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash 18678, now seen corresponding path program 1 times [2023-11-19 07:36:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752240046] [2023-11-19 07:36:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,696 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 07:36:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752240046] [2023-11-19 07:36:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752240046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934954410] [2023-11-19 07:36:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:49,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:49,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 255 [2023-11-19 07:36:49,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 16 transitions, 36 flow. Second operand has 2 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 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 07:36:49,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:49,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 255 [2023-11-19 07:36:49,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:49,816 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-11-19 07:36:49,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:49,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 20/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 177 event pairs, 20 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 98. Up to 55 conditions per place. [2023-11-19 07:36:49,819 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:36:49,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 50 flow [2023-11-19 07:36:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:36:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 241 transitions. [2023-11-19 07:36:49,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725490196078431 [2023-11-19 07:36:49,838 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 241 transitions. [2023-11-19 07:36:49,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 241 transitions. [2023-11-19 07:36:49,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:49,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 241 transitions. [2023-11-19 07:36:49,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 120.5) internal successors, (241), 2 states have internal predecessors, (241), 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 07:36:49,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 07:36:49,860 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 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 07:36:49,862 INFO L175 Difference]: Start difference. First operand has 17 places, 16 transitions, 36 flow. Second operand 2 states and 241 transitions. [2023-11-19 07:36:49,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 50 flow [2023-11-19 07:36:49,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:49,867 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 28 flow [2023-11-19 07:36:49,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:36:49,873 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:36:49,874 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 28 flow [2023-11-19 07:36:49,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 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 07:36:49,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:49,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:36:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:49,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:36:49,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash 18696, now seen corresponding path program 1 times [2023-11-19 07:36:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200804728] [2023-11-19 07:36:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,063 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 07:36:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200804728] [2023-11-19 07:36:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200804728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307177055] [2023-11-19 07:36:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:50,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 255 [2023-11-19 07:36:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 07:36:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 255 [2023-11-19 07:36:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:50,141 INFO L124 PetriNetUnfolderBase]: 15/43 cut-off events. [2023-11-19 07:36:50,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:50,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 43 events. 15/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 121 event pairs, 15 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 87. Up to 42 conditions per place. [2023-11-19 07:36:50,144 INFO L140 encePairwiseOnDemand]: 253/255 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:36:50,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 46 flow [2023-11-19 07:36:50,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-11-19 07:36:50,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300653594771242 [2023-11-19 07:36:50,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-11-19 07:36:50,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-11-19 07:36:50,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:50,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-11-19 07:36:50,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 07:36:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,160 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 28 flow. Second operand 3 states and 329 transitions. [2023-11-19 07:36:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 46 flow [2023-11-19 07:36:50,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:50,162 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 28 flow [2023-11-19 07:36:50,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-11-19 07:36:50,166 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-11-19 07:36:50,167 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 28 flow [2023-11-19 07:36:50,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 07:36:50,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:50,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:36:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:50,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:36:50,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 18697, now seen corresponding path program 1 times [2023-11-19 07:36:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991352490] [2023-11-19 07:36:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,341 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 07:36:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991352490] [2023-11-19 07:36:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991352490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307279974] [2023-11-19 07:36:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:50,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 255 [2023-11-19 07:36:50,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 07:36:50,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:50,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 255 [2023-11-19 07:36:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:50,411 INFO L124 PetriNetUnfolderBase]: 10/31 cut-off events. [2023-11-19 07:36:50,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:50,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 31 events. 10/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 77 event pairs, 10 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 64. Up to 30 conditions per place. [2023-11-19 07:36:50,413 INFO L140 encePairwiseOnDemand]: 253/255 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2023-11-19 07:36:50,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 44 flow [2023-11-19 07:36:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-11-19 07:36:50,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366013071895425 [2023-11-19 07:36:50,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-11-19 07:36:50,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-11-19 07:36:50,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:50,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-11-19 07:36:50,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 07:36:50,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,422 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 28 flow. Second operand 3 states and 334 transitions. [2023-11-19 07:36:50,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 44 flow [2023-11-19 07:36:50,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 43 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:50,424 INFO L231 Difference]: Finished difference. Result has 17 places, 10 transitions, 27 flow [2023-11-19 07:36:50,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2023-11-19 07:36:50,426 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-11-19 07:36:50,427 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 27 flow [2023-11-19 07:36:50,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 07:36:50,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:50,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:36:50,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:50,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONARRAY_INDEX === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:36:50,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash 557371657, now seen corresponding path program 1 times [2023-11-19 07:36:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043712797] [2023-11-19 07:36:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,538 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 07:36:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043712797] [2023-11-19 07:36:50,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043712797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:50,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253922401] [2023-11-19 07:36:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:50,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:50,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:50,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 255 [2023-11-19 07:36:50,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 07:36:50,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:50,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 255 [2023-11-19 07:36:50,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:50,584 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-11-19 07:36:50,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 39 event pairs, 4 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 45. Up to 15 conditions per place. [2023-11-19 07:36:50,586 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-11-19 07:36:50,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 45 flow [2023-11-19 07:36:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-11-19 07:36:50,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44575163398692813 [2023-11-19 07:36:50,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-11-19 07:36:50,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-11-19 07:36:50,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:50,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-11-19 07:36:50,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 07:36:50,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 07:36:50,594 INFO L175 Difference]: Start difference. First operand has 17 places, 10 transitions, 27 flow. Second operand 3 states and 341 transitions. [2023-11-19 07:36:50,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 45 flow [2023-11-19 07:36:50,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:50,595 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 26 flow [2023-11-19 07:36:50,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-11-19 07:36:50,597 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:36:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 26 flow [2023-11-19 07:36:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 07:36:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:50,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:36:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:50,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:36:50,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash 557371664, now seen corresponding path program 1 times [2023-11-19 07:36:50,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818457197] [2023-11-19 07:36:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:50,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:50,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:50,681 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:50,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-11-19 07:36:50,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (8 of 10 remaining) [2023-11-19 07:36:50,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (7 of 10 remaining) [2023-11-19 07:36:50,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 07:36:50,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-19 07:36:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-19 07:36:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-11-19 07:36:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-11-19 07:36:50,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (1 of 10 remaining) [2023-11-19 07:36:50,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 10 remaining) [2023-11-19 07:36:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:50,686 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:36:50,692 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:36:50,693 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:36:50,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-19 07:36:50,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:36:50 BasicIcfg [2023-11-19 07:36:50,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:36:50,723 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:36:50,723 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:36:50,723 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:36:50,723 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:41" (3/4) ... [2023-11-19 07:36:50,725 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:36:50,726 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:36:50,727 INFO L158 Benchmark]: Toolchain (without parser) took 11003.00ms. Allocated memory was 132.1MB in the beginning and 195.0MB in the end (delta: 62.9MB). Free memory was 84.8MB in the beginning and 71.2MB in the end (delta: 13.6MB). Peak memory consumption was 78.0MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,728 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 132.1MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:50,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.92ms. Allocated memory is still 132.1MB. Free memory was 84.8MB in the beginning and 64.4MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.17ms. Allocated memory is still 132.1MB. Free memory was 64.4MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,729 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 132.1MB. Free memory was 62.2MB in the beginning and 60.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,730 INFO L158 Benchmark]: RCFGBuilder took 639.17ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 60.7MB in the beginning and 123.8MB in the end (delta: -63.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,730 INFO L158 Benchmark]: TraceAbstraction took 9533.88ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 123.8MB in the beginning and 71.2MB in the end (delta: 52.6MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2023-11-19 07:36:50,731 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 195.0MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:50,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 132.1MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.92ms. Allocated memory is still 132.1MB. Free memory was 84.8MB in the beginning and 64.4MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.17ms. Allocated memory is still 132.1MB. Free memory was 64.4MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 132.1MB. Free memory was 62.2MB in the beginning and 60.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 639.17ms. Allocated memory was 132.1MB in the beginning and 161.5MB in the end (delta: 29.4MB). Free memory was 60.7MB in the beginning and 123.8MB in the end (delta: -63.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9533.88ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 123.8MB in the beginning and 71.2MB in the end (delta: 52.6MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 195.0MB. Free memory is still 71.2MB. 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~pre10 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: 8.0s, 116 PlacesBefore, 17 PlacesAfterwards, 121 TransitionsBefore, 16 TransitionsAfterwards, 2774 CoEnabledTransitionPairs, 9 FixpointIterations, 27 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 134 TotalNumberOfCompositions, 2464 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2464, independent: 2464, independent conditional: 0, independent unconditional: 2464, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1411, independent: 1411, independent conditional: 0, independent unconditional: 1411, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2464, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1411, unknown conditional: 0, unknown unconditional: 1411] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 13]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 13. Possible FailurePath: [L688] 0 int memory[(2*320+1)]; [L689] 0 int next_alloc_idx = 1; [L690] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 int top; [L746] 0 pthread_mutex_t m2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L747] 0 int state = 0; [L765] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L766] COND TRUE 0 1 [L766] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L753] 1 case 0: [L754] CALL 1 EBStack_init() [L706] 1 top = 0 [L754] RET 1 EBStack_init() [L755] 1 state = 1 [L756] 1 case 1: [L758] CALL 1 push_loop() [L739] 1 int r = -1; [L740] 1 int arg = __VERIFIER_nondet_int(); [L741] COND TRUE 1 1 [L742] CALL, EXPR 1 push(arg) [L715] 1 int oldTop = -1, newTop = -1; [L716] CALL, EXPR 1 index_malloc() [L693] 1 int curr_alloc_idx = -1; [L695] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) [L699] 1 curr_alloc_idx = next_alloc_idx [L700] 1 next_alloc_idx += 2 [L703] 1 return curr_alloc_idx; [L716] RET, EXPR 1 index_malloc() [L716] 1 newTop = index_malloc() [L717] COND FALSE 1 !(newTop == 0) [L720] EXPR 1 memory[newTop+0] [L720] 1 memory[newTop+0] = d [L722] 1 oldTop = top [L723] EXPR 1 memory[newTop+1] [L723] 1 memory[newTop+1] = oldTop [L725] 1 top = newTop [L728] 1 return 1; [L742] RET, EXPR 1 push(arg) [L742] 1 r = push(arg) [L743] CALL 1 __VERIFIER_atomic_assert(r) [L736] EXPR 1 !r || !isEmpty() [L736] CALL, EXPR 1 isEmpty() [L709] COND FALSE 1 !(top == 0) [L712] 1 return 0; [L736] RET, EXPR 1 isEmpty() [L736] EXPR 1 !r || !isEmpty() [L736] COND TRUE 1 !(!(!r || !isEmpty())) [L736] CALL 1 reach_error() [L13] COND FALSE 1 !(0) [L13] 1 __assert_fail ("0", "25_stack_longer-1-pthread.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [m2={4:0}, m={3:0}, next_alloc_idx=3, state=1, top=1] - UnprovableResult [Line: 720]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds 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: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 766]: 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, 181 locations, 10 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: 9.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.4s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 07:36:50,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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_d5878bee-37e8-4216-aee8-3099b85b29cc/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 d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:53,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:53,675 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:36:53,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:53,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:53,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:53,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:53,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:53,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:53,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:53,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:53,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:53,742 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:53,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:53,744 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:53,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:53,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:53,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:53,746 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:36:53,747 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:36:53,747 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:36:53,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:53,748 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:53,749 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:36:53,749 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:36:53,750 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:53,750 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:53,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:53,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:53,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:53,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:53,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:53,753 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:53,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:53,754 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:36:53,754 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:36:53,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:53,755 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:53,755 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:53,756 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:36:53,756 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:53,757 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_d5878bee-37e8-4216-aee8-3099b85b29cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c [2023-11-19 07:36:54,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:54,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:54,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:54,221 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:54,225 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:54,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 07:36:57,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:57,847 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:57,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 07:36:57,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/9a573175c/d9bbbbde5bbd472c8492943a899d0466/FLAG12f392b77 [2023-11-19 07:36:57,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/data/9a573175c/d9bbbbde5bbd472c8492943a899d0466 [2023-11-19 07:36:57,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:57,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:57,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:57,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:57,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:57,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afbd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:57, skipping insertion in model container [2023-11-19 07:36:57,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:57" (1/1) ... [2023-11-19 07:36:57,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:58,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:58,379 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:58,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:58,523 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:58,527 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:58,536 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:58,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58 WrapperNode [2023-11-19 07:36:58,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:58,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:58,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:58,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:58,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,661 INFO L138 Inliner]: procedures = 175, calls = 35, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 124 [2023-11-19 07:36:58,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:58,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:58,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:58,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:58,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:58,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:58,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:58,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:58,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (1/1) ... [2023-11-19 07:36:58,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:58,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:58,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:58,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:36:58,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:36:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:36:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:36:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:36:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:36:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:58,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:58,842 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 07:36:59,004 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:59,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:59,295 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:59,417 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:59,417 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:59,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:59 BoogieIcfgContainer [2023-11-19 07:36:59,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:59,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:59,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:59,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:59,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:57" (1/3) ... [2023-11-19 07:36:59,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c614ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:59, skipping insertion in model container [2023-11-19 07:36:59,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:58" (2/3) ... [2023-11-19 07:36:59,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c614ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:59, skipping insertion in model container [2023-11-19 07:36:59,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:59" (3/3) ... [2023-11-19 07:36:59,431 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1-pthread.i [2023-11-19 07:36:59,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:59,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:36:59,450 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:59,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:59,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,717 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-11-19 07:36:59,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:59,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 9/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:36:59,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:59,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 119 transitions, 242 flow [2023-11-19 07:36:59,803 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-11-19 07:36:59,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:59,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 9/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-11-19 07:36:59,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 2660 [2023-11-19 07:37:16,681 INFO L134 LiptonReduction]: Checked pairs total: 2313 [2023-11-19 07:37:16,681 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-11-19 07:37:16,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:16,702 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;@56a7fc21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:16,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:37:16,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:16,705 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:37:16,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:16,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:16,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:37:16,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:37:16,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash 18300, now seen corresponding path program 1 times [2023-11-19 07:37:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:16,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999602804] [2023-11-19 07:37:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:16,729 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 07:37:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:16,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:16,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:16,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:37:16,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:16,847 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 07:37:16,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:16,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999602804] [2023-11-19 07:37:16,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999602804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:16,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904606705] [2023-11-19 07:37:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:16,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:37:16,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:16,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:37:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:37:16,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-11-19 07:37:16,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 16 transitions, 36 flow. Second operand has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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 07:37:16,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:16,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-11-19 07:37:16,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:16,990 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-11-19 07:37:16,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:16,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 55 events. 20/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 172 event pairs, 20 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 98. Up to 55 conditions per place. [2023-11-19 07:37:16,995 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-19 07:37:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 50 flow [2023-11-19 07:37:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:37:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:37:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 237 transitions. [2023-11-19 07:37:17,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2023-11-19 07:37:17,013 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 237 transitions. [2023-11-19 07:37:17,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 237 transitions. [2023-11-19 07:37:17,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:17,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 237 transitions. [2023-11-19 07:37:17,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 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 07:37:17,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 07:37:17,030 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 07:37:17,032 INFO L175 Difference]: Start difference. First operand has 17 places, 16 transitions, 36 flow. Second operand 2 states and 237 transitions. [2023-11-19 07:37:17,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 50 flow [2023-11-19 07:37:17,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:17,038 INFO L231 Difference]: Finished difference. Result has 16 places, 12 transitions, 28 flow [2023-11-19 07:37:17,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2023-11-19 07:37:17,044 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:37:17,044 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 28 flow [2023-11-19 07:37:17,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 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 07:37:17,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:17,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:37:17,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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)] Ended with exit code 0 [2023-11-19 07:37:17,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:17,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:37:17,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash 18318, now seen corresponding path program 1 times [2023-11-19 07:37:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:17,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272953731] [2023-11-19 07:37:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:17,251 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 07:37:17,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:17,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:17,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:17,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:17,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:17,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:37:17,395 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 07:37:17,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:17,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:17,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272953731] [2023-11-19 07:37:17,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272953731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:17,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:17,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893486537] [2023-11-19 07:37:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:17,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 249 [2023-11-19 07:37:17,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 07:37:17,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:17,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 249 [2023-11-19 07:37:17,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:17,528 INFO L124 PetriNetUnfolderBase]: 15/43 cut-off events. [2023-11-19 07:37:17,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:17,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 43 events. 15/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 118 event pairs, 15 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 87. Up to 42 conditions per place. [2023-11-19 07:37:17,529 INFO L140 encePairwiseOnDemand]: 247/249 looper letters, 9 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-11-19 07:37:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 46 flow [2023-11-19 07:37:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-19 07:37:17,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323962516733601 [2023-11-19 07:37:17,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-19 07:37:17,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-19 07:37:17,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:17,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-19 07:37:17,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 07:37:17,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:17,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:17,544 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 28 flow. Second operand 3 states and 323 transitions. [2023-11-19 07:37:17,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 46 flow [2023-11-19 07:37:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:37:17,545 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 28 flow [2023-11-19 07:37:17,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-11-19 07:37:17,546 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-11-19 07:37:17,546 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 28 flow [2023-11-19 07:37:17,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 07:37:17,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:17,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:37:17,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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)] Ended with exit code 0 [2023-11-19 07:37:17,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:17,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:37:17,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 18319, now seen corresponding path program 1 times [2023-11-19 07:37:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:17,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117534824] [2023-11-19 07:37:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:17,752 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 07:37:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:17,754 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:17,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (4)] Waiting until timeout for monitored process [2023-11-19 07:37:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:17,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:17,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:17,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:37:17,880 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 07:37:17,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:17,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117534824] [2023-11-19 07:37:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117534824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:17,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:17,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747441] [2023-11-19 07:37:17,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:17,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:17,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:17,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:17,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:17,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 249 [2023-11-19 07:37:17,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 07:37:17,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:17,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 249 [2023-11-19 07:37:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:17,996 INFO L124 PetriNetUnfolderBase]: 10/31 cut-off events. [2023-11-19 07:37:17,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 31 events. 10/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 76 event pairs, 10 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 64. Up to 30 conditions per place. [2023-11-19 07:37:17,997 INFO L140 encePairwiseOnDemand]: 247/249 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2023-11-19 07:37:17,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 44 flow [2023-11-19 07:37:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-11-19 07:37:18,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4390896921017403 [2023-11-19 07:37:18,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-11-19 07:37:18,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-11-19 07:37:18,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:18,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-11-19 07:37:18,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 07:37:18,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:18,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:18,017 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 28 flow. Second operand 3 states and 328 transitions. [2023-11-19 07:37:18,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 44 flow [2023-11-19 07:37:18,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 43 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:18,018 INFO L231 Difference]: Finished difference. Result has 17 places, 10 transitions, 27 flow [2023-11-19 07:37:18,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2023-11-19 07:37:18,020 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 0 predicate places. [2023-11-19 07:37:18,021 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 27 flow [2023-11-19 07:37:18,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 07:37:18,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:18,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:18,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:18,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONARRAY_INDEX === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:37:18,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash 546100761, now seen corresponding path program 1 times [2023-11-19 07:37:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:18,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977474057] [2023-11-19 07:37:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:18,226 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 07:37:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:18,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (5)] Waiting until timeout for monitored process [2023-11-19 07:37:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:18,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:18,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:18,343 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 07:37:18,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:18,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:18,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977474057] [2023-11-19 07:37:18,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977474057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:18,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20808048] [2023-11-19 07:37:18,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:18,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 249 [2023-11-19 07:37:18,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 07:37:18,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:18,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 249 [2023-11-19 07:37:18,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:18,419 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-11-19 07:37:18,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:18,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 37 event pairs, 4 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 45. Up to 15 conditions per place. [2023-11-19 07:37:18,420 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-11-19 07:37:18,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 10 transitions, 45 flow [2023-11-19 07:37:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-11-19 07:37:18,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484605087014726 [2023-11-19 07:37:18,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-11-19 07:37:18,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-11-19 07:37:18,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:18,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-11-19 07:37:18,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 07:37:18,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:18,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 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 07:37:18,437 INFO L175 Difference]: Start difference. First operand has 17 places, 10 transitions, 27 flow. Second operand 3 states and 335 transitions. [2023-11-19 07:37:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 10 transitions, 45 flow [2023-11-19 07:37:18,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:18,439 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 26 flow [2023-11-19 07:37:18,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-11-19 07:37:18,446 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -1 predicate places. [2023-11-19 07:37:18,448 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 26 flow [2023-11-19 07:37:18,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 07:37:18,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:18,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:18,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:18,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONARRAY_INDEX, thr1Err1ASSERT_VIOLATIONARRAY_INDEX, thr1Err2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-19 07:37:18,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash 546100764, now seen corresponding path program 1 times [2023-11-19 07:37:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814179978] [2023-11-19 07:37:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:18,654 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 07:37:18,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:18,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:18,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (6)] Waiting until timeout for monitored process [2023-11-19 07:37:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:18,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:18,860 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 07:37:18,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:37:18,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-11-19 07:37:18,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (8 of 10 remaining) [2023-11-19 07:37:18,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (7 of 10 remaining) [2023-11-19 07:37:18,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 07:37:18,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-19 07:37:18,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-19 07:37:18,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-11-19 07:37:18,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-11-19 07:37:18,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONARRAY_INDEX (1 of 10 remaining) [2023-11-19 07:37:18,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONARRAY_INDEX (0 of 10 remaining) [2023-11-19 07:37:18,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:19,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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 07:37:19,070 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:37:19,076 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:37:19,076 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:37:19,098 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-19 07:37:19,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:37:19 BasicIcfg [2023-11-19 07:37:19,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:37:19,109 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:37:19,109 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:37:19,109 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:37:19,109 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:59" (3/4) ... [2023-11-19 07:37:19,111 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:37:19,112 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:37:19,113 INFO L158 Benchmark]: Toolchain (without parser) took 21224.13ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 79.0MB in the beginning and 44.4MB in the end (delta: 34.6MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2023-11-19 07:37:19,113 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:19,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 57.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:37:19,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.15ms. Allocated memory is still 104.9MB. Free memory was 57.4MB in the beginning and 82.1MB in the end (delta: -24.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:37:19,115 INFO L158 Benchmark]: Boogie Preprocessor took 70.13ms. Allocated memory is still 104.9MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:19,116 INFO L158 Benchmark]: RCFGBuilder took 687.97ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 56.3MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:19,116 INFO L158 Benchmark]: TraceAbstraction took 19684.19ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 55.3MB in the beginning and 44.4MB in the end (delta: 10.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2023-11-19 07:37:19,117 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 125.8MB. Free memory is still 44.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:19,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.40ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 57.4MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 124.15ms. Allocated memory is still 104.9MB. Free memory was 57.4MB in the beginning and 82.1MB in the end (delta: -24.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.13ms. Allocated memory is still 104.9MB. Free memory was 82.1MB in the beginning and 80.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 687.97ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 56.3MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 19684.19ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 55.3MB in the beginning and 44.4MB in the end (delta: 10.9MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 125.8MB. Free memory is still 44.4MB. 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~pre10 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: 16.9s, 114 PlacesBefore, 17 PlacesAfterwards, 119 TransitionsBefore, 16 TransitionsAfterwards, 2660 CoEnabledTransitionPairs, 7 FixpointIterations, 28 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 130 TotalNumberOfCompositions, 2313 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2313, independent: 2313, independent conditional: 0, independent unconditional: 2313, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1353, independent: 1353, independent conditional: 0, independent unconditional: 1353, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2313, independent: 960, independent conditional: 0, independent unconditional: 960, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1353, unknown conditional: 0, unknown unconditional: 1353] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 13]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 13. Possible FailurePath: [L688] 0 int memory[(2*320+1)]; [L689] 0 int next_alloc_idx = 1; [L690] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 int top; [L746] 0 pthread_mutex_t m2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L747] 0 int state = 0; [L765] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={7:0}, top=0] [L766] COND TRUE 0 1 [L766] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={7:0}, top=0] [L753] 1 case 0: [L754] CALL 1 EBStack_init() [L706] 1 top = 0 [L754] RET 1 EBStack_init() [L755] 1 state = 1 [L756] 1 case 1: [L758] CALL 1 push_loop() [L739] 1 int r = -1; [L740] 1 int arg = __VERIFIER_nondet_int(); [L741] COND TRUE 1 1 [L742] CALL, EXPR 1 push(arg) [L715] 1 int oldTop = -1, newTop = -1; [L716] CALL, EXPR 1 index_malloc() [L693] 1 int curr_alloc_idx = -1; [L695] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) [L699] 1 curr_alloc_idx = next_alloc_idx [L700] 1 next_alloc_idx += 2 [L703] 1 return curr_alloc_idx; [L716] RET, EXPR 1 index_malloc() [L716] 1 newTop = index_malloc() [L717] COND FALSE 1 !(newTop == 0) [L720] EXPR 1 memory[newTop+0] [L720] 1 memory[newTop+0] = d [L722] 1 oldTop = top [L723] EXPR 1 memory[newTop+1] [L723] 1 memory[newTop+1] = oldTop [L725] 1 top = newTop [L728] 1 return 1; [L742] RET, EXPR 1 push(arg) [L742] 1 r = push(arg) [L743] CALL 1 __VERIFIER_atomic_assert(r) [L736] EXPR 1 !r || !isEmpty() [L736] CALL, EXPR 1 isEmpty() [L709] COND FALSE 1 !(top == 0) [L712] 1 return 0; [L736] RET, EXPR 1 isEmpty() [L736] EXPR 1 !r || !isEmpty() [L736] COND TRUE 1 !(!(!r || !isEmpty())) [L736] CALL 1 reach_error() [L13] COND FALSE 1 !(0) [L13] 1 __assert_fail ("0", "25_stack_longer-1-pthread.c", 4, __extension__ __PRETTY_FUNCTION__) VAL [m2={4:0}, m={3:0}, next_alloc_idx=3, state=1, top=1] - UnprovableResult [Line: 720]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that array index is always in bounds Unable to prove that array index is always in bounds 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: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 766]: 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, 176 locations, 10 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: 19.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 22 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 SizeOfPredicates, 0 NumberOfNonLiveVariables, 203 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 07:37:19,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5878bee-37e8-4216-aee8-3099b85b29cc/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