./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 17:18:32,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:18:32,918 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 17:18:32,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:18:32,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:18:32,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:18:32,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:18:32,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:18:32,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:18:32,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:18:32,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:18:32,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:18:32,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:18:32,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:18:32,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 17:18:32,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:18:32,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:18:32,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:18:32,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:18:32,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 17:18:32,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:18:32,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 17:18:32,963 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:18:32,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 17:18:32,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:18:32,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:18:32,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:18:32,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:18:32,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:18:32,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:18:32,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:18:32,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:18:32,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 17:18:32,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:18:32,969 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 17:18:32,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:18:32,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:18:32,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:18:32,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 17:18:32,971 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:18:32,971 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:18:32,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2023-11-21 17:18:33,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:18:33,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:18:33,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:18:33,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:18:33,310 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:18:33,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-21 17:18:36,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:18:36,719 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:18:36,720 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2023-11-21 17:18:36,747 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/data/6ed5cadba/bbbc0d7a42b240a6974cb02785888de6/FLAGd0ebe89b4 [2023-11-21 17:18:36,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/data/6ed5cadba/bbbc0d7a42b240a6974cb02785888de6 [2023-11-21 17:18:36,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:18:36,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:18:36,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:18:36,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:18:36,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:18:36,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:36" (1/1) ... [2023-11-21 17:18:36,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d742da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:36, skipping insertion in model container [2023-11-21 17:18:36,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:18:36" (1/1) ... [2023-11-21 17:18:36,831 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:18:37,023 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 17:18:37,184 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2023-11-21 17:18:37,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:18:37,207 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:18:37,224 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 17:18:37,249 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i[31244,31257] [2023-11-21 17:18:37,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:18:37,307 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:18:37,308 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:18:37,308 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:18:37,317 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:18:37,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37 WrapperNode [2023-11-21 17:18:37,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:18:37,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:18:37,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:18:37,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:18:37,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,400 INFO L138 Inliner]: procedures = 174, calls = 51, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2023-11-21 17:18:37,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:18:37,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:18:37,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:18:37,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:18:37,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:18:37,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:18:37,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:18:37,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:18:37,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (1/1) ... [2023-11-21 17:18:37,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:18:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:18:37,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:18:37,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:18:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 17:18:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 17:18:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:18:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:18:37,569 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-21 17:18:37,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-21 17:18:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:18:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:18:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 17:18:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:18:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:18:37,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:18:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-21 17:18:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-21 17:18:37,575 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 17:18:37,719 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:18:37,721 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:18:37,916 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:18:38,171 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:18:38,172 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 17:18:38,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:38 BoogieIcfgContainer [2023-11-21 17:18:38,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:18:38,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:18:38,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:18:38,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:18:38,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:18:36" (1/3) ... [2023-11-21 17:18:38,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a68587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:38, skipping insertion in model container [2023-11-21 17:18:38,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:18:37" (2/3) ... [2023-11-21 17:18:38,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a68587a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:18:38, skipping insertion in model container [2023-11-21 17:18:38,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:38" (3/3) ... [2023-11-21 17:18:38,185 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2023-11-21 17:18:38,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 17:18:38,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:18:38,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 17:18:38,208 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:18:38,316 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-21 17:18:38,363 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:18:38,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:18:38,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 [2023-11-21 17:18:38,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:18:38,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:18:38,427 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:18:38,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == readerThread1of1ForFork2 ======== [2023-11-21 17:18:38,451 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5ad38ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:18:38,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 17:18:38,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:38,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash -434995930, now seen corresponding path program 1 times [2023-11-21 17:18:38,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704498202] [2023-11-21 17:18:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:39,221 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 17:18:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704498202] [2023-11-21 17:18:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704498202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:18:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762743714] [2023-11-21 17:18:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 17:18:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 17:18:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 17:18:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:39,276 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:39,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) 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 17:18:39,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:39,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 17:18:39,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:39,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1736733916, now seen corresponding path program 1 times [2023-11-21 17:18:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636272031] [2023-11-21 17:18:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:39,688 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 17:18:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:39,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636272031] [2023-11-21 17:18:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636272031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:39,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:39,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 17:18:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227151736] [2023-11-21 17:18:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 17:18:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 17:18:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 17:18:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:39,693 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 17:18:39,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:39,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:18:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 17:18:39,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:39,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -111302876, now seen corresponding path program 1 times [2023-11-21 17:18:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014523278] [2023-11-21 17:18:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:40,143 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 17:18:40,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014523278] [2023-11-21 17:18:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014523278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:40,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:40,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 17:18:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184443607] [2023-11-21 17:18:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 17:18:40,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 17:18:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 17:18:40,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,150 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:40,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 17:18:40,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:18:40,150 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 17:18:40,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:40,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 256546345, now seen corresponding path program 1 times [2023-11-21 17:18:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225932918] [2023-11-21 17:18:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:40,432 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 17:18:40,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225932918] [2023-11-21 17:18:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225932918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 17:18:40,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812475192] [2023-11-21 17:18:40,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 17:18:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 17:18:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 17:18:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,436 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:40,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 17:18:40,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:40,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:40,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:40,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 17:18:40,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:40,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1334904255, now seen corresponding path program 2 times [2023-11-21 17:18:40,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:40,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930835923] [2023-11-21 17:18:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:40,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:40,657 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 17:18:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930835923] [2023-11-21 17:18:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930835923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 17:18:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625794015] [2023-11-21 17:18:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:40,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 17:18:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:40,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 17:18:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 17:18:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,662 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:40,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 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 17:18:40,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:40,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:40,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:40,663 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 17:18:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 17:18:40,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash -242531071, now seen corresponding path program 3 times [2023-11-21 17:18:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827657287] [2023-11-21 17:18:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:41,053 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 17:18:41,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:41,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827657287] [2023-11-21 17:18:41,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827657287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:41,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 17:18:41,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901606210] [2023-11-21 17:18:41,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:41,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 17:18:41,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:41,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 17:18:41,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 17:18:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:41,057 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:41,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 17:18:41,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:41,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:41,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:41,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:41,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-11-21 17:18:41,059 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 17:18:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 17:18:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:18:41,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 17:18:41,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:41,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:41,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1412923615, now seen corresponding path program 1 times [2023-11-21 17:18:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:41,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25237123] [2023-11-21 17:18:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:18:41,612 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 17:18:41,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:18:41,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25237123] [2023-11-21 17:18:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25237123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:18:41,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:18:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 17:18:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354678995] [2023-11-21 17:18:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:18:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 17:18:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:18:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 17:18:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 17:18:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:41,616 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:18:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 17:18:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2023-11-21 17:18:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:41,616 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:41,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2023-11-21 17:18:41,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:18:41,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:18:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 17:18:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 17:18:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 17:18:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:18:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 17:18:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 17:18:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 17:18:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 17:18:42,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:18:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:18:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1049959043, now seen corresponding path program 1 times [2023-11-21 17:18:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:18:42,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457354484] [2023-11-21 17:18:42,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:18:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:18:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 17:18:42,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 17:18:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 17:18:42,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 17:18:42,546 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 17:18:42,548 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 17:18:42,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 17:18:42,556 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2023-11-21 17:18:42,558 INFO L307 ceAbstractionStarter]: Result for error location readerThread1of1ForFork2 was UNSAFE (1/3) [2023-11-21 17:18:42,562 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 17:18:42,562 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 17:18:42,640 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-21 17:18:42,641 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-21 17:18:42,643 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 17:18:42,644 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 17:18:42,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:18:42 BasicIcfg [2023-11-21 17:18:42,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 17:18:42,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 17:18:42,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 17:18:42,655 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 17:18:42,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:18:38" (3/4) ... [2023-11-21 17:18:42,656 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 17:18:42,676 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated [2023-11-21 17:18:42,677 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-21 17:18:42,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 17:18:42,680 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 17:18:42,731 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/witness.graphml [2023-11-21 17:18:42,731 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 17:18:42,732 INFO L158 Benchmark]: Toolchain (without parser) took 5965.59ms. Allocated memory was 146.8MB in the beginning and 218.1MB in the end (delta: 71.3MB). Free memory was 99.2MB in the beginning and 120.2MB in the end (delta: -20.9MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,732 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 17:18:42,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.45ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 78.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.59ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 76.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,733 INFO L158 Benchmark]: Boogie Preprocessor took 61.30ms. Allocated memory is still 146.8MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,734 INFO L158 Benchmark]: RCFGBuilder took 707.18ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 74.7MB in the beginning and 142.9MB in the end (delta: -68.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,735 INFO L158 Benchmark]: TraceAbstraction took 4477.29ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 141.9MB in the beginning and 129.6MB in the end (delta: 12.3MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,735 INFO L158 Benchmark]: Witness Printer took 76.31ms. Allocated memory is still 218.1MB. Free memory was 129.6MB in the beginning and 120.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 17:18:42,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.45ms. Allocated memory is still 146.8MB. Free memory was 99.2MB in the beginning and 78.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.59ms. Allocated memory is still 146.8MB. Free memory was 78.3MB in the beginning and 76.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.30ms. Allocated memory is still 146.8MB. Free memory was 76.2MB in the beginning and 74.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 707.18ms. Allocated memory was 146.8MB in the beginning and 180.4MB in the end (delta: 33.6MB). Free memory was 74.7MB in the beginning and 142.9MB in the end (delta: -68.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4477.29ms. Allocated memory was 180.4MB in the beginning and 218.1MB in the end (delta: 37.7MB). Free memory was 141.9MB in the beginning and 129.6MB in the end (delta: 12.3MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Witness Printer took 76.31ms. Allocated memory is still 218.1MB. Free memory was 129.6MB in the beginning and 120.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 10794, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 191, dependent conditional: 140, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10759, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 156, dependent conditional: 105, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 10759, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 156, dependent conditional: 105, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 626, dependent unconditional: 259, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 282, dependent unconditional: 603, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 282, dependent unconditional: 603, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1800, independent: 1714, independent conditional: 17, independent unconditional: 1697, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1800, independent: 1680, independent conditional: 0, independent unconditional: 1680, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 120, independent: 34, independent conditional: 17, independent unconditional: 17, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 120, independent: 34, independent conditional: 17, independent unconditional: 17, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 367, independent: 134, independent conditional: 43, independent unconditional: 90, dependent: 233, dependent conditional: 67, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 11488, independent: 8889, independent conditional: 86, independent unconditional: 8803, dependent: 799, dependent conditional: 247, dependent unconditional: 552, unknown: 1800, unknown conditional: 52, unknown unconditional: 1748] , Statistics on independence cache: Total cache size (in pairs): 1800, Positive cache size: 1714, Positive conditional cache size: 17, Positive unconditional cache size: 1697, Negative cache size: 86, Negative conditional cache size: 35, Negative unconditional cache size: 51, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 344, Maximal queried relation: 6, Independence queries for same thread: 35 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.5s, Number of persistent set computation: 1200, Number of trivial persistent sets: 381, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1748, independent: 1697, independent conditional: 0, independent unconditional: 1697, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 10794, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 191, dependent conditional: 140, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10759, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 156, dependent conditional: 105, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 10759, independent: 10603, independent conditional: 8906, independent unconditional: 1697, dependent: 156, dependent conditional: 105, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 626, dependent unconditional: 259, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 282, dependent unconditional: 603, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11488, independent: 10603, independent conditional: 103, independent unconditional: 10500, dependent: 885, dependent conditional: 282, dependent unconditional: 603, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1800, independent: 1714, independent conditional: 17, independent unconditional: 1697, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1800, independent: 1680, independent conditional: 0, independent unconditional: 1680, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 120, independent: 34, independent conditional: 17, independent unconditional: 17, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 120, independent: 34, independent conditional: 17, independent unconditional: 17, dependent: 86, dependent conditional: 35, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 367, independent: 134, independent conditional: 43, independent unconditional: 90, dependent: 233, dependent conditional: 67, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 11488, independent: 8889, independent conditional: 86, independent unconditional: 8803, dependent: 799, dependent conditional: 247, dependent unconditional: 552, unknown: 1800, unknown conditional: 52, unknown unconditional: 1748] , Statistics on independence cache: Total cache size (in pairs): 1800, Positive cache size: 1714, Positive conditional cache size: 17, Positive unconditional cache size: 1697, Negative cache size: 86, Negative conditional cache size: 35, Negative unconditional cache size: 51, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 344, Maximal queried relation: 6, Independence queries for same thread: 35 - CounterExampleResult [Line: 738]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1={7:0}, t2={8:0}, t3={5:0}, t4={6:0}, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1={7:0}, t2={8:0}, t3={5:0}, t4={6:0}, w=0, x=0, y=0] [L724] 2 int l; VAL [arg={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [arg={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, t1={7:0}, t2={8:0}, t3={5:0}, t4={6:0}, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, t1={7:0}, t2={8:0}, t3={5:0}, t4={6:0}, w=0, x=0, y=0] [L724] 4 int l; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L733] 4 int ly = y; VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L743] 2 r = l VAL [arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L745] 2 return 0; [L714] CALL 3 __VERIFIER_atomic_take_write_lock() [L706] CALL 3 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 3 !(!cond) [L706] RET 3 assume_abort_if_not(w==0 && r==0) [L707] 3 w = 1 [L714] RET 3 __VERIFIER_atomic_take_write_lock() [L716] 3 x = 3 VAL [arg={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] [L738] 4 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: readerThread1of1ForFork2 with 1 thread instances CFG has 7 procedures, 79 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 2.4s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 54, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 425 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 proved your program to be incorrect! [2023-11-21 17:18:42,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2023-11-21 17:18:42,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a3890d3-3359-4e8f-a6d9-93c9d3795ac0/bin/ugemcutter-verify-n4DOmGwLwf/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE