./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:54:44,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:54:44,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:54:44,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:54:44,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:54:44,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:54:44,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:54:44,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:54:44,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:54:44,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:54:44,879 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:54:44,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:54:44,880 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:54:44,880 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:54:44,881 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:54:44,881 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:54:44,882 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:54:44,882 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:54:44,883 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:54:44,883 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:54:44,884 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:54:44,885 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:54:44,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:54:44,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:54:44,886 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:54:44,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:54:44,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:54:44,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:54:44,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:54:44,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:54:44,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:54:44,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:54:44,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:54:44,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:54:44,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:54:44,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:54:44,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:54:44,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:54:44,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:54:44,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:54:44,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:54:44,891 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:54:44,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:54:44,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:54:44,892 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:54:44,892 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:54:44,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:54:44,893 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 [2023-12-02 17:54:45,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:54:45,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:54:45,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:54:45,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:54:45,119 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:54:45,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2023-12-02 17:54:47,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:54:48,076 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:54:48,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2023-12-02 17:54:48,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/data/864579eb6/3602c07f56d9494bb21594e2bd9b2af0/FLAG9c16cb7ec [2023-12-02 17:54:48,100 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/data/864579eb6/3602c07f56d9494bb21594e2bd9b2af0 [2023-12-02 17:54:48,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:54:48,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:54:48,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:54:48,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:54:48,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:54:48,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724f34c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48, skipping insertion in model container [2023-12-02 17:54:48,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,163 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:54:48,443 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2023-12-02 17:54:48,448 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2023-12-02 17:54:48,450 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2023-12-02 17:54:48,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:54:48,462 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:54:48,507 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2023-12-02 17:54:48,508 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2023-12-02 17:54:48,509 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_d9b97ea8-4eb7-47bb-be00-b74e1b190605/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2023-12-02 17:54:48,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:54:48,544 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:54:48,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48 WrapperNode [2023-12-02 17:54:48,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:54:48,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:54:48,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:54:48,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:54:48,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,587 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 138 [2023-12-02 17:54:48,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:54:48,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:54:48,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:54:48,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:54:48,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:54:48,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:54:48,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:54:48,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:54:48,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (1/1) ... [2023-12-02 17:54:48,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:54:48,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:48,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:54:48,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:54:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-12-02 17:54:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-12-02 17:54:48,688 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-02 17:54:48,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-02 17:54:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:54:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-02 17:54:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-02 17:54:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:54:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:54:48,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-12-02 17:54:48,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-12-02 17:54:48,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-12-02 17:54:48,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:54:48,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:54:48,832 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:54:48,835 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:54:49,074 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:54:49,181 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:54:49,181 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 17:54:49,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:49 BoogieIcfgContainer [2023-12-02 17:54:49,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:54:49,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:54:49,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:54:49,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:54:49,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:54:48" (1/3) ... [2023-12-02 17:54:49,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237a658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:54:49, skipping insertion in model container [2023-12-02 17:54:49,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:48" (2/3) ... [2023-12-02 17:54:49,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237a658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:54:49, skipping insertion in model container [2023-12-02 17:54:49,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:49" (3/3) ... [2023-12-02 17:54:49,190 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2023-12-02 17:54:49,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:54:49,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-02 17:54:49,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:54:49,267 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=FINITE_AUTOMATA, 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;@3f2a9c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:54:49,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-02 17:54:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 32 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 17:54:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 17:54:49,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:49,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:49,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -380833791, now seen corresponding path program 1 times [2023-12-02 17:54:49,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:49,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964389661] [2023-12-02 17:54:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:54:49,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964389661] [2023-12-02 17:54:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964389661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:49,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:54:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585194800] [2023-12-02 17:54:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:54:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:54:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:54:49,604 INFO L87 Difference]: Start difference. First operand has 49 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 32 states have internal predecessors, (39), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:54:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:49,692 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2023-12-02 17:54:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:54:49,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-12-02 17:54:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:49,704 INFO L225 Difference]: With dead ends: 96 [2023-12-02 17:54:49,704 INFO L226 Difference]: Without dead ends: 51 [2023-12-02 17:54:49,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:54:49,712 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:49,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:54:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-02 17:54:49,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-02 17:54:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 17:54:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-12-02 17:54:49,757 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2023-12-02 17:54:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:49,758 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-12-02 17:54:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:54:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-12-02 17:54:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:54:49,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:49,760 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:49,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:54:49,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:49,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1943186129, now seen corresponding path program 1 times [2023-12-02 17:54:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679511314] [2023-12-02 17:54:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:54:50,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:50,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679511314] [2023-12-02 17:54:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679511314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:50,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:54:50,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961828541] [2023-12-02 17:54:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:50,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:54:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:50,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:54:50,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:54:50,116 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:54:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:50,468 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2023-12-02 17:54:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:54:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-12-02 17:54:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:50,471 INFO L225 Difference]: With dead ends: 145 [2023-12-02 17:54:50,472 INFO L226 Difference]: Without dead ends: 100 [2023-12-02 17:54:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:54:50,474 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:50,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 147 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:54:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-02 17:54:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2023-12-02 17:54:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.24) internal successors, (62), 54 states have internal predecessors, (62), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2023-12-02 17:54:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2023-12-02 17:54:50,504 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 20 [2023-12-02 17:54:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:50,505 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2023-12-02 17:54:50,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 17:54:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2023-12-02 17:54:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 17:54:50,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:50,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:54:50,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1431664665, now seen corresponding path program 1 times [2023-12-02 17:54:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612747144] [2023-12-02 17:54:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:54:50,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:54:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:54:50,641 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:54:50,641 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:54:50,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-02 17:54:50,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-02 17:54:50,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-02 17:54:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:54:50,648 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 17:54:50,652 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:54:50,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret35 [2023-12-02 17:54:50,680 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret36 [2023-12-02 17:54:50,683 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-12-02 17:54:50,684 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret17 could not be translated [2023-12-02 17:54:50,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret18 [2023-12-02 17:54:50,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem6 [2023-12-02 17:54:50,685 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem6 [2023-12-02 17:54:50,686 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-12-02 17:54:50,687 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-12-02 17:54:50,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:54:50 BoogieIcfgContainer [2023-12-02 17:54:50,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:54:50,699 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:54:50,699 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:54:50,699 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:54:50,700 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:49" (3/4) ... [2023-12-02 17:54:50,700 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 17:54:50,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret35 [2023-12-02 17:54:50,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret36 [2023-12-02 17:54:50,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-12-02 17:54:50,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret17 could not be translated [2023-12-02 17:54:50,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret18 [2023-12-02 17:54:50,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem6 [2023-12-02 17:54:50,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem6 [2023-12-02 17:54:50,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem30 [2023-12-02 17:54:50,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated [2023-12-02 17:54:50,754 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:54:50,754 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:54:50,755 INFO L158 Benchmark]: Toolchain (without parser) took 2650.98ms. Allocated memory was 178.3MB in the beginning and 232.8MB in the end (delta: 54.5MB). Free memory was 134.9MB in the beginning and 175.2MB in the end (delta: -40.3MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,755 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory was 143.2MB in the beginning and 143.2MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:54:50,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.68ms. Allocated memory is still 178.3MB. Free memory was 134.3MB in the beginning and 114.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.36ms. Allocated memory is still 178.3MB. Free memory was 114.5MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,756 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 178.3MB. Free memory was 112.5MB in the beginning and 109.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,756 INFO L158 Benchmark]: RCFGBuilder took 559.70ms. Allocated memory is still 178.3MB. Free memory was 109.8MB in the beginning and 143.1MB in the end (delta: -33.3MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,757 INFO L158 Benchmark]: TraceAbstraction took 1513.68ms. Allocated memory was 178.3MB in the beginning and 232.8MB in the end (delta: 54.5MB). Free memory was 142.4MB in the beginning and 179.4MB in the end (delta: -37.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,757 INFO L158 Benchmark]: Witness Printer took 55.21ms. Allocated memory is still 232.8MB. Free memory was 179.4MB in the beginning and 175.2MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:54:50,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory was 143.2MB in the beginning and 143.2MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.68ms. Allocated memory is still 178.3MB. Free memory was 134.3MB in the beginning and 114.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.36ms. Allocated memory is still 178.3MB. Free memory was 114.5MB in the beginning and 112.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 178.3MB. Free memory was 112.5MB in the beginning and 109.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 559.70ms. Allocated memory is still 178.3MB. Free memory was 109.8MB in the beginning and 143.1MB in the end (delta: -33.3MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1513.68ms. Allocated memory was 178.3MB in the beginning and 232.8MB in the end (delta: 54.5MB). Free memory was 142.4MB in the beginning and 179.4MB in the end (delta: -37.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Witness Printer took 55.21ms. Allocated memory is still 232.8MB. Free memory was 179.4MB in the beginning and 175.2MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret36 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret18 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret35 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret36 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret18 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem30 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret32 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L692] CALL foo() [L681] FCALL ldv_initialize() [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={3:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [m1={-1:0}, mutexes={3:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) VAL [mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) [L636] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L636] RET, EXPR ldv_is_in_set(new, s) VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] EXPR le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] EXPR le->e = new [L640] CALL, EXPR ldv_list_add(&le->list, s) [L608] EXPR head->next VAL [head={3:0}, head={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L608] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={3:0}, new={-3:4}, next={3:0}, prev={3:0}] [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new [L608] RET __ldv_list_add(new, head, head->next) VAL [head={3:0}, head={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L640] RET, EXPR ldv_list_add(&le->list, s) [L636-L641] { struct ldv_list_element *le; le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)); le->e = new; ldv_list_add(&le->list, s); } VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L670] RET ldv_set_add(m, &mutexes) [L684] RET mutex_lock(m1) VAL [m1={-1:0}, m2={-2:0}, mutexes={3:0}] [L685] CALL mutex_lock(m1) VAL [mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] { const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );} [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L655] COND TRUE &m->list != (s) [L656] EXPR m->e VAL [e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L656] COND TRUE m->e == e [L657] return 1; VAL [\result=1, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] - UnprovableResult [Line: 673]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 280 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 98 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 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! [2023-12-02 17:54:50,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9b97ea8-4eb7-47bb-be00-b74e1b190605/bin/utaipan-verify-nQ1chXbOIh/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE