./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx --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 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:50,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:50,444 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:13:50,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:50,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:50,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:50,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:50,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:50,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:50,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:50,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:50,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:50,509 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:50,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:50,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:50,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:50,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:50,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:50,513 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:13:50,514 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:13:50,515 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:13:50,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:50,516 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:13:50,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:50,516 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:50,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:50,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:50,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:50,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:13:50,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:50,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:50,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:50,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:50,521 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:13:50,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:13:50,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:50,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:50,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:50,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:50,522 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_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 [2023-11-21 22:13:50,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:50,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:50,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:50,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:50,841 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:50,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:13:53,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:54,218 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:54,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:13:54,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/70fb49363/dd695a3599d24b979f6a767b66d753c5/FLAGd4e63b119 [2023-11-21 22:13:54,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/70fb49363/dd695a3599d24b979f6a767b66d753c5 [2023-11-21 22:13:54,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:54,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:54,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:54,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:54,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:54,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2213ca9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54, skipping insertion in model container [2023-11-21 22:13:54,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:54,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:54,672 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:54,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:54,783 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:54,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54 WrapperNode [2023-11-21 22:13:54,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:54,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:54,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:54,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:54,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,839 INFO L138 Inliner]: procedures = 162, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-21 22:13:54,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:54,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:54,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:54,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:54,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:54,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:54,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:54,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:54,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (1/1) ... [2023-11-21 22:13:54,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:54,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:54,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:13:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:13:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:13:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:13:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:54,947 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:13:55,071 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:55,073 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:55,206 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:55,283 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:55,283 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:13:55,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:55 BoogieIcfgContainer [2023-11-21 22:13:55,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:55,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:55,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:55,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:55,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:54" (1/3) ... [2023-11-21 22:13:55,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceb2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:55, skipping insertion in model container [2023-11-21 22:13:55,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:54" (2/3) ... [2023-11-21 22:13:55,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceb2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:55, skipping insertion in model container [2023-11-21 22:13:55,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:55" (3/3) ... [2023-11-21 22:13:55,294 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:13:55,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:55,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-21 22:13:55,330 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:13:55,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:13:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 40 flow [2023-11-21 22:13:55,452 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-21 22:13:55,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:55,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-11-21 22:13:55,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 18 transitions, 40 flow [2023-11-21 22:13:55,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 17 transitions, 37 flow [2023-11-21 22:13:55,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:55,479 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;@33c7febd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:55,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:13:55,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:13:55,483 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:13:55,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:55,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:55,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:13:55,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:13:55,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 4411, now seen corresponding path program 1 times [2023-11-21 22:13:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:55,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519914735] [2023-11-21 22:13:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519914735] [2023-11-21 22:13:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519914735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:55,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:13:55,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052423812] [2023-11-21 22:13:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:55,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:55,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:55,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 18 [2023-11-21 22:13:55,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-21 22:13:55,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:55,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 18 [2023-11-21 22:13:55,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:55,897 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-21 22:13:55,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:13:55,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 28 events. 6/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 41. Up to 15 conditions per place. [2023-11-21 22:13:55,899 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 9 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-11-21 22:13:55,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 57 flow [2023-11-21 22:13:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2023-11-21 22:13:55,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-21 22:13:55,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 34 transitions. [2023-11-21 22:13:55,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 34 transitions. [2023-11-21 22:13:55,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:55,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 34 transitions. [2023-11-21 22:13:55,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-21 22:13:55,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:13:55,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:13:55,926 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 34 transitions. [2023-11-21 22:13:55,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 57 flow [2023-11-21 22:13:55,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:55,932 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-11-21 22:13:55,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-11-21 22:13:55,941 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-11-21 22:13:55,942 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-11-21 22:13:55,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-21 22:13:55,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:55,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:13:55,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:13:55,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:13:55,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 4412, now seen corresponding path program 1 times [2023-11-21 22:13:55,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:55,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762381133] [2023-11-21 22:13:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:56,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:56,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762381133] [2023-11-21 22:13:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762381133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:56,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:56,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:13:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300458866] [2023-11-21 22:13:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:56,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-21 22:13:56,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-21 22:13:56,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:56,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-21 22:13:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:56,201 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-21 22:13:56,201 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:13:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 26 events. 6/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 69 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 44. Up to 15 conditions per place. [2023-11-21 22:13:56,205 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 8 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-21 22:13:56,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 56 flow [2023-11-21 22:13:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2023-11-21 22:13:56,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-21 22:13:56,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2023-11-21 22:13:56,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2023-11-21 22:13:56,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:56,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2023-11-21 22:13:56,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-21 22:13:56,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:13:56,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:13:56,215 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 32 transitions. [2023-11-21 22:13:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 56 flow [2023-11-21 22:13:56,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:56,218 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-11-21 22:13:56,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-11-21 22:13:56,219 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-21 22:13:56,219 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-11-21 22:13:56,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-21 22:13:56,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:56,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:13:56,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:13:56,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:13:56,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash 131497734, now seen corresponding path program 1 times [2023-11-21 22:13:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555229524] [2023-11-21 22:13:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:56,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:56,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:13:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555229524] [2023-11-21 22:13:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555229524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:56,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:56,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594435464] [2023-11-21 22:13:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:13:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:56,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-21 22:13:56,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-21 22:13:56,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:56,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-21 22:13:56,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:56,408 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-11-21 22:13:56,408 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:13:56,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 23 events. 6/23 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 48 event pairs, 1 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 41. Up to 14 conditions per place. [2023-11-21 22:13:56,409 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 6 selfloop transitions, 2 changer transitions 3/14 dead transitions. [2023-11-21 22:13:56,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2023-11-21 22:13:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2023-11-21 22:13:56,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-11-21 22:13:56,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 39 transitions. [2023-11-21 22:13:56,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 39 transitions. [2023-11-21 22:13:56,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:56,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 39 transitions. [2023-11-21 22:13:56,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2023-11-21 22:13:56,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:13:56,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:13:56,413 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 4 states and 39 transitions. [2023-11-21 22:13:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2023-11-21 22:13:56,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:56,414 INFO L231 Difference]: Finished difference. Result has 17 places, 9 transitions, 24 flow [2023-11-21 22:13:56,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=24, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2023-11-21 22:13:56,415 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-21 22:13:56,415 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 9 transitions, 24 flow [2023-11-21 22:13:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-21 22:13:56,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:56,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:13:56,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:13:56,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1815669475, now seen corresponding path program 1 times [2023-11-21 22:13:56,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:13:56,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538670477] [2023-11-21 22:13:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:56,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:13:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:56,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:13:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:13:56,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:13:56,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:13:56,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-21 22:13:56,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-21 22:13:56,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-21 22:13:56,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-21 22:13:56,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-21 22:13:56,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-21 22:13:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:13:56,474 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:13:56,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:13:56,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:13:56,493 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated [2023-11-21 22:13:56,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:13:56 BasicIcfg [2023-11-21 22:13:56,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:13:56,505 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:13:56,505 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:13:56,505 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:13:56,505 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:55" (3/4) ... [2023-11-21 22:13:56,507 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:13:56,508 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:13:56,510 INFO L158 Benchmark]: Toolchain (without parser) took 2239.01ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 82.3MB in the end (delta: 12.1MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2023-11-21 22:13:56,510 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:13:56,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.39ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 75.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:13:56,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.71ms. Allocated memory is still 127.9MB. Free memory was 75.2MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:13:56,512 INFO L158 Benchmark]: Boogie Preprocessor took 26.20ms. Allocated memory is still 127.9MB. Free memory was 73.5MB in the beginning and 72.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:13:56,512 INFO L158 Benchmark]: RCFGBuilder took 417.35ms. Allocated memory is still 127.9MB. Free memory was 72.2MB in the beginning and 56.8MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:13:56,513 INFO L158 Benchmark]: TraceAbstraction took 1216.45ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 56.3MB in the beginning and 82.6MB in the end (delta: -26.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2023-11-21 22:13:56,514 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 165.7MB. Free memory was 82.6MB in the beginning and 82.3MB in the end (delta: 324.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:13:56,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 127.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.39ms. Allocated memory is still 127.9MB. Free memory was 94.0MB in the beginning and 75.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.71ms. Allocated memory is still 127.9MB. Free memory was 75.2MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.20ms. Allocated memory is still 127.9MB. Free memory was 73.5MB in the beginning and 72.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.35ms. Allocated memory is still 127.9MB. Free memory was 72.2MB in the beginning and 56.8MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1216.45ms. Allocated memory was 127.9MB in the beginning and 165.7MB in the end (delta: 37.7MB). Free memory was 56.3MB in the beginning and 82.6MB in the end (delta: -26.4MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 165.7MB. Free memory was 82.6MB in the beginning and 82.3MB in the end (delta: 324.6kB). 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~pre2 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: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) - 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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 26 locations, 6 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2023-11-21 22:13:56,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx --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 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:59,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:59,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:13:59,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:59,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:59,536 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:59,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:59,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:59,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:59,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:59,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:59,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:59,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:59,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:59,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:59,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:59,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:59,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:59,549 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:13:59,549 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:13:59,549 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:13:59,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:59,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:13:59,551 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:13:59,551 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:13:59,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:59,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:59,552 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:59,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:59,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:59,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:13:59,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:59,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:59,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:59,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:59,557 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:13:59,557 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:13:59,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:59,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:59,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:59,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:59,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:13:59,559 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_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 [2023-11-21 22:13:59,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:59,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:59,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:59,994 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:59,994 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:59,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:14:03,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:14:03,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:14:03,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/sv-benchmarks/c/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:14:03,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/87e403b06/a1e1a1dc68864ab5af8ad09c5bd51ae5/FLAGed5a88288 [2023-11-21 22:14:03,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/data/87e403b06/a1e1a1dc68864ab5af8ad09c5bd51ae5 [2023-11-21 22:14:03,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:14:03,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:14:03,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:03,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:14:03,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:14:03,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:03" (1/1) ... [2023-11-21 22:14:03,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e737114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:03, skipping insertion in model container [2023-11-21 22:14:03,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:03" (1/1) ... [2023-11-21 22:14:03,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:14:04,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:04,030 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:14:04,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:04,193 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:14:04,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04 WrapperNode [2023-11-21 22:14:04,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:04,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:04,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:14:04,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:14:04,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,254 INFO L138 Inliner]: procedures = 165, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 38 [2023-11-21 22:14:04,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:04,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:14:04,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:14:04,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:14:04,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:14:04,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:14:04,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:14:04,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:14:04,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (1/1) ... [2023-11-21 22:14:04,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:04,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:14:04,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:14:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:14:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:14:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:14:04,370 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:14:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:14:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:14:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:14:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:14:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:14:04,372 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:14:04,559 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:14:04,570 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:14:04,792 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:14:04,890 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:14:04,890 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:14:04,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:04 BoogieIcfgContainer [2023-11-21 22:14:04,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:14:04,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:14:04,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:14:04,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:14:04,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:03" (1/3) ... [2023-11-21 22:14:04,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66501eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:04, skipping insertion in model container [2023-11-21 22:14:04,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:04" (2/3) ... [2023-11-21 22:14:04,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66501eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:04, skipping insertion in model container [2023-11-21 22:14:04,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:04" (3/3) ... [2023-11-21 22:14:04,901 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-11-21 22:14:04,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:14:04,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-21 22:14:04,921 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:14:04,977 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:14:05,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 40 flow [2023-11-21 22:14:05,055 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-21 22:14:05,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:14:05,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 2/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2023-11-21 22:14:05,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 18 transitions, 40 flow [2023-11-21 22:14:05,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 17 transitions, 37 flow [2023-11-21 22:14:05,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:14:05,098 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;@49b0a0d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:14:05,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-21 22:14:05,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:14:05,105 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:14:05,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:14:05,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:05,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:14:05,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:05,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:05,114 INFO L85 PathProgramCache]: Analyzing trace with hash 4411, now seen corresponding path program 1 times [2023-11-21 22:14:05,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:05,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878041149] [2023-11-21 22:14:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:05,130 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 [2023-11-21 22:14:05,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:05,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:05,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:05,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:05,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:05,334 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 [2023-11-21 22:14:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:05,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:05,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878041149] [2023-11-21 22:14:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878041149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:05,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:05,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:05,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127108676] [2023-11-21 22:14:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:05,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:05,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 18 [2023-11-21 22:14:05,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-21 22:14:05,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:05,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 18 [2023-11-21 22:14:05,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:05,483 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-11-21 22:14:05,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:14:05,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 28 events. 6/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 41. Up to 15 conditions per place. [2023-11-21 22:14:05,486 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 9 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-11-21 22:14:05,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 57 flow [2023-11-21 22:14:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2023-11-21 22:14:05,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2023-11-21 22:14:05,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 34 transitions. [2023-11-21 22:14:05,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 34 transitions. [2023-11-21 22:14:05,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:05,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 34 transitions. [2023-11-21 22:14:05,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-21 22:14:05,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:14:05,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:14:05,521 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 37 flow. Second operand 3 states and 34 transitions. [2023-11-21 22:14:05,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 57 flow [2023-11-21 22:14:05,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:05,527 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 32 flow [2023-11-21 22:14:05,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-11-21 22:14:05,535 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-11-21 22:14:05,536 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 32 flow [2023-11-21 22:14:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-21 22:14:05,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:05,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:14:05,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:05,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:05,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:05,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 4412, now seen corresponding path program 1 times [2023-11-21 22:14:05,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:05,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913622764] [2023-11-21 22:14:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:05,747 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 [2023-11-21 22:14:05,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:05,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:05,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:05,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:05,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:05,850 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 [2023-11-21 22:14:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:05,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:05,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:05,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913622764] [2023-11-21 22:14:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913622764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67895754] [2023-11-21 22:14:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:05,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:05,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 18 [2023-11-21 22:14:05,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-21 22:14:05,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:05,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 18 [2023-11-21 22:14:05,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:05,924 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-11-21 22:14:05,924 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:14:05,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 26 events. 6/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 67 event pairs, 1 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 44. Up to 15 conditions per place. [2023-11-21 22:14:05,926 INFO L140 encePairwiseOnDemand]: 15/18 looper letters, 8 selfloop transitions, 2 changer transitions 0/15 dead transitions. [2023-11-21 22:14:05,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 56 flow [2023-11-21 22:14:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2023-11-21 22:14:05,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2023-11-21 22:14:05,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2023-11-21 22:14:05,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2023-11-21 22:14:05,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:05,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2023-11-21 22:14:05,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-21 22:14:05,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:14:05,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-21 22:14:05,939 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 3 states and 32 transitions. [2023-11-21 22:14:05,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 56 flow [2023-11-21 22:14:05,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:05,941 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 30 flow [2023-11-21 22:14:05,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-11-21 22:14:05,943 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-21 22:14:05,944 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 30 flow [2023-11-21 22:14:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-21 22:14:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:05,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:14:05,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:06,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:06,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:06,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:06,154 INFO L85 PathProgramCache]: Analyzing trace with hash 131497734, now seen corresponding path program 1 times [2023-11-21 22:14:06,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361419154] [2023-11-21 22:14:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,156 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 [2023-11-21 22:14:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:06,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:06,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:06,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:06,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:06,348 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_33| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_33| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_33|) (_ bv0 1)))) is different from true [2023-11-21 22:14:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:06,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:06,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361419154] [2023-11-21 22:14:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361419154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:06,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790097325] [2023-11-21 22:14:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:06,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:14:06,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-21 22:14:06,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-21 22:14:06,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:06,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-21 22:14:06,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:06,404 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2023-11-21 22:14:06,404 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:14:06,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 36 events. 10/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 104 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 64. Up to 21 conditions per place. [2023-11-21 22:14:06,405 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 9 selfloop transitions, 6 changer transitions 1/19 dead transitions. [2023-11-21 22:14:06,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 76 flow [2023-11-21 22:14:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:14:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2023-11-21 22:14:06,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-21 22:14:06,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:06,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-21 22:14:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:06,410 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 30 flow. Second operand 4 states and 33 transitions. [2023-11-21 22:14:06,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 76 flow [2023-11-21 22:14:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:06,412 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 61 flow [2023-11-21 22:14:06,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-11-21 22:14:06,413 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 0 predicate places. [2023-11-21 22:14:06,413 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 61 flow [2023-11-21 22:14:06,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-21 22:14:06,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:06,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:14:06,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:06,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -218537251, now seen corresponding path program 1 times [2023-11-21 22:14:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961571905] [2023-11-21 22:14:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,618 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 [2023-11-21 22:14:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:06,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:06,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:06,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:06,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:06,796 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_34| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_34|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_34| (_ bv0 1))))) is different from true [2023-11-21 22:14:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:06,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:06,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961571905] [2023-11-21 22:14:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961571905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:06,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996397324] [2023-11-21 22:14:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:06,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:06,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:14:06,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-21 22:14:06,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-21 22:14:06,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:06,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-21 22:14:06,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:06,852 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2023-11-21 22:14:06,852 INFO L125 PetriNetUnfolderBase]: For 7/9 co-relation queries the response was YES. [2023-11-21 22:14:06,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 33 events. 8/33 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 89 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 85. Up to 21 conditions per place. [2023-11-21 22:14:06,853 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 9 selfloop transitions, 8 changer transitions 2/22 dead transitions. [2023-11-21 22:14:06,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 123 flow [2023-11-21 22:14:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:14:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2023-11-21 22:14:06,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-21 22:14:06,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:06,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 33 transitions. [2023-11-21 22:14:06,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2023-11-21 22:14:06,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:06,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:06,857 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 61 flow. Second operand 4 states and 33 transitions. [2023-11-21 22:14:06,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 123 flow [2023-11-21 22:14:06,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 22 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:06,860 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 91 flow [2023-11-21 22:14:06,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-11-21 22:14:06,861 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-21 22:14:06,861 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 91 flow [2023-11-21 22:14:06,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-21 22:14:06,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:06,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:06,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:07,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:07,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1815654954, now seen corresponding path program 1 times [2023-11-21 22:14:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870957992] [2023-11-21 22:14:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:07,069 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 [2023-11-21 22:14:07,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:07,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:07,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:07,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:07,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:07,206 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id~0#1.base_35| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_35|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id~0#1.base_35| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-21 22:14:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:07,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:07,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870957992] [2023-11-21 22:14:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870957992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936656819] [2023-11-21 22:14:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:14:07,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 18 [2023-11-21 22:14:07,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-21 22:14:07,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:07,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 18 [2023-11-21 22:14:07,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:07,277 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2023-11-21 22:14:07,277 INFO L125 PetriNetUnfolderBase]: For 15/18 co-relation queries the response was YES. [2023-11-21 22:14:07,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 32 events. 6/32 cut-off events. For 15/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 92 event pairs, 0 based on Foata normal form. 3/33 useless extension candidates. Maximal degree in co-relation 97. Up to 19 conditions per place. [2023-11-21 22:14:07,278 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 12 selfloop transitions, 6 changer transitions 0/21 dead transitions. [2023-11-21 22:14:07,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 143 flow [2023-11-21 22:14:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:14:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2023-11-21 22:14:07,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-21 22:14:07,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 32 transitions. [2023-11-21 22:14:07,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 32 transitions. [2023-11-21 22:14:07,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:07,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 32 transitions. [2023-11-21 22:14:07,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2023-11-21 22:14:07,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:07,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-21 22:14:07,282 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 91 flow. Second operand 4 states and 32 transitions. [2023-11-21 22:14:07,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 143 flow [2023-11-21 22:14:07,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:07,285 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 109 flow [2023-11-21 22:14:07,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-21 22:14:07,286 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-21 22:14:07,287 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 109 flow [2023-11-21 22:14:07,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-21 22:14:07,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:07,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:07,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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)] Ended with exit code 0 [2023-11-21 22:14:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:07,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-11-21 22:14:07,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1815669475, now seen corresponding path program 1 times [2023-11-21 22:14:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508423326] [2023-11-21 22:14:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:07,491 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 [2023-11-21 22:14:07,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:07,492 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:14:07,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 (7)] Waiting until timeout for monitored process [2023-11-21 22:14:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:14:07,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:14:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:14:07,587 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 22:14:07,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:14:07,588 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2023-11-21 22:14:07,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-21 22:14:07,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-21 22:14:07,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-11-21 22:14:07,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-21 22:14:07,591 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-11-21 22:14:07,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 (7)] Ended with exit code 0 [2023-11-21 22:14:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:14:07,792 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-21 22:14:07,796 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:14:07,797 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:14:07,808 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre2 could not be translated [2023-11-21 22:14:07,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:14:07 BasicIcfg [2023-11-21 22:14:07,815 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:14:07,815 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:14:07,815 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:14:07,816 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:14:07,816 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:04" (3/4) ... [2023-11-21 22:14:07,818 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:14:07,819 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:14:07,820 INFO L158 Benchmark]: Toolchain (without parser) took 4277.64ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 50.6MB in the beginning and 53.0MB in the end (delta: -2.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,820 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:14:07,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.82ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 47.6MB in the end (delta: 2.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.39ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,826 INFO L158 Benchmark]: Boogie Preprocessor took 29.04ms. Allocated memory is still 75.5MB. Free memory was 45.5MB in the beginning and 44.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,826 INFO L158 Benchmark]: RCFGBuilder took 607.39ms. Allocated memory is still 75.5MB. Free memory was 43.9MB in the beginning and 46.2MB in the end (delta: -2.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,827 INFO L158 Benchmark]: TraceAbstraction took 2920.23ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.5MB in the beginning and 53.6MB in the end (delta: -8.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-11-21 22:14:07,827 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 92.3MB. Free memory was 53.6MB in the beginning and 53.0MB in the end (delta: 607.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:14:07,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.82ms. Allocated memory is still 75.5MB. Free memory was 50.3MB in the beginning and 47.6MB in the end (delta: 2.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.39ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 45.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.04ms. Allocated memory is still 75.5MB. Free memory was 45.5MB in the beginning and 44.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.39ms. Allocated memory is still 75.5MB. Free memory was 43.9MB in the beginning and 46.2MB in the end (delta: -2.3MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2920.23ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.5MB in the beginning and 53.6MB in the end (delta: -8.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 92.3MB. Free memory was 53.6MB in the beginning and 53.0MB in the end (delta: 607.1kB). 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~pre2 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: - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] CALL 1 reach_error() [L18] COND FALSE 1 !(0) [L18] 1 __assert_fail ("0", "36-apron_41-threadenter-no-locals_unknown_1_pos.c", 3, __extension__ __PRETTY_FUNCTION__) - 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: 687]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 690]: 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, 26 locations, 6 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 75 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 5 QuantifiedInterpolants, 221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2023-11-21 22:14:07,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4a38e87-aa24-4f39-9c65-7ae9406af095/bin/uautomizer-verify-bycVGegfSx/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