./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2 --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 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:22:47,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:22:47,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:22:47,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:22:47,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:22:47,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:22:47,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:22:47,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:22:47,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:22:47,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:22:47,631 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:22:47,631 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:22:47,632 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:22:47,632 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:22:47,632 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:22:47,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:22:47,633 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:22:47,637 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:22:47,638 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:22:47,638 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:22:47,638 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:22:47,639 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:22:47,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:22:47,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:22:47,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:22:47,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:22:47,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:22:47,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:22:47,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:22:47,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:22:47,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:22:47,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:22:47,643 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:22:47,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:22:47,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:22:47,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:22:47,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:22:47,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:22:47,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:47,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:22:47,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:22:47,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:22:47,647 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:22:47,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:22:47,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:22:47,648 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:22:47,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:22:47,648 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_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2024-11-02 12:22:47,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:22:47,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:22:47,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:22:47,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:22:47,994 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:22:47,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i Unable to find full path for "g++" [2024-11-02 12:22:50,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:22:50,408 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:22:50,408 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2024-11-02 12:22:50,439 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/data/91c8303d3/3c206f3ad3004891b186b3c8edb3531c/FLAGb9be8506a [2024-11-02 12:22:50,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/data/91c8303d3/3c206f3ad3004891b186b3c8edb3531c [2024-11-02 12:22:50,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:22:50,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:22:50,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:50,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:22:50,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:22:50,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:50" (1/1) ... [2024-11-02 12:22:50,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20baf06f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:50, skipping insertion in model container [2024-11-02 12:22:50,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:50" (1/1) ... [2024-11-02 12:22:50,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:22:50,983 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2024-11-02 12:22:50,992 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2024-11-02 12:22:50,994 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2024-11-02 12:22:51,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:51,030 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:22:51,109 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2024-11-02 12:22:51,110 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2024-11-02 12:22:51,111 WARN L251 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_55893235-644e-47f5-be27-aa995a613332/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2024-11-02 12:22:51,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:51,163 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:22:51,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51 WrapperNode [2024-11-02 12:22:51,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:51,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:51,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:22:51,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:22:51,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,215 INFO L138 Inliner]: procedures = 142, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 186 [2024-11-02 12:22:51,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:51,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:22:51,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:22:51,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:22:51,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:22:51,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:22:51,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:22:51,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:22:51,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (1/1) ... [2024-11-02 12:22:51,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:51,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:51,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:22:51,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:22:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-02 12:22:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-02 12:22:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-11-02 12:22:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-11-02 12:22:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:22:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:22:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:22:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-02 12:22:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-02 12:22:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:22:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:22:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:22:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:22:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-02 12:22:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-02 12:22:51,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:22:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:22:51,545 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:22:51,547 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:22:51,933 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-02 12:22:51,933 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:22:52,078 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:22:52,078 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-02 12:22:52,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:52 BoogieIcfgContainer [2024-11-02 12:22:52,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:22:52,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:22:52,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:22:52,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:22:52,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:22:50" (1/3) ... [2024-11-02 12:22:52,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f135b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:52, skipping insertion in model container [2024-11-02 12:22:52,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:51" (2/3) ... [2024-11-02 12:22:52,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f135b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:52, skipping insertion in model container [2024-11-02 12:22:52,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:52" (3/3) ... [2024-11-02 12:22:52,093 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2024-11-02 12:22:52,114 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:22:52,114 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-02 12:22:52,193 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:22:52,202 INFO L333 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, 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;@b1fb2b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:22:52,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-02 12:22:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 34 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:22:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 12:22:52,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:52,219 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 12:22:52,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:52,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1888218409, now seen corresponding path program 1 times [2024-11-02 12:22:52,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:52,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851890320] [2024-11-02 12:22:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:52,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851890320] [2024-11-02 12:22:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851890320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:52,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:22:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943911473] [2024-11-02 12:22:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:52,645 INFO L87 Difference]: Start difference. First operand has 47 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 34 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:22:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:52,920 INFO L93 Difference]: Finished difference Result 126 states and 163 transitions. [2024-11-02 12:22:52,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-11-02 12:22:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:52,933 INFO L225 Difference]: With dead ends: 126 [2024-11-02 12:22:52,934 INFO L226 Difference]: Without dead ends: 80 [2024-11-02 12:22:52,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:22:52,943 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 42 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:52,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 98 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:22:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-02 12:22:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2024-11-02 12:22:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 49 states have internal predecessors, (64), 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) [2024-11-02 12:22:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-11-02 12:22:53,009 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 6 [2024-11-02 12:22:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:53,009 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-11-02 12:22:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-02 12:22:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-11-02 12:22:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 12:22:53,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:53,014 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:53,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:22:53,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:53,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 559613062, now seen corresponding path program 1 times [2024-11-02 12:22:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:53,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264290866] [2024-11-02 12:22:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264290866] [2024-11-02 12:22:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264290866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:53,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:53,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947523186] [2024-11-02 12:22:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:53,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:53,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:53,261 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:22:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:53,478 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2024-11-02 12:22:53,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:53,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-02 12:22:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:53,482 INFO L225 Difference]: With dead ends: 115 [2024-11-02 12:22:53,483 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 12:22:53,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:22:53,487 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:53,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 106 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:22:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 12:22:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2024-11-02 12:22:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.28125) internal successors, (41), 35 states have internal predecessors, (41), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-02 12:22:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-02 12:22:53,507 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 11 [2024-11-02 12:22:53,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:53,508 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-02 12:22:53,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:22:53,509 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-02 12:22:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:22:53,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:53,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:53,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:22:53,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:22:53,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 615468255, now seen corresponding path program 1 times [2024-11-02 12:22:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358112418] [2024-11-02 12:22:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:53,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:54,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358112418] [2024-11-02 12:22:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358112418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:22:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834586696] [2024-11-02 12:22:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:54,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:22:54,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55893235-644e-47f5-be27-aa995a613332/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:22:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:54,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-02 12:22:54,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:22:54,668 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-02 12:22:54,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-02 12:22:54,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2024-11-02 12:22:54,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2024-11-02 12:22:54,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-11-02 12:22:54,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 55 [2024-11-02 12:22:54,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2024-11-02 12:22:54,992 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2024-11-02 12:22:54,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 46 [2024-11-02 12:22:55,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2024-11-02 12:22:55,041 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2024-11-02 12:22:55,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2024-11-02 12:22:55,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-02 12:22:55,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2024-11-02 12:22:55,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2024-11-02 12:22:55,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2024-11-02 12:22:55,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2024-11-02 12:22:55,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 42 [2024-11-02 12:22:55,213 INFO L349 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2024-11-02 12:22:55,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 26 [2024-11-02 12:22:55,223 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:22:55,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 28 [2024-11-02 12:22:55,278 INFO L349 Elim1Store]: treesize reduction 78, result has 25.0 percent of original size [2024-11-02 12:22:55,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 42 [2024-11-02 12:22:55,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2024-11-02 12:22:55,346 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2024-11-02 12:22:55,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 30 [2024-11-02 12:22:55,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 32 [2024-11-02 12:22:55,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-02 12:22:55,386 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2024-11-02 12:22:55,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 22 [2024-11-02 12:22:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-02 12:22:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:56,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:22:56,865 INFO L349 Elim1Store]: treesize reduction 136, result has 36.7 percent of original size [2024-11-02 12:22:56,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 272 treesize of output 215 [2024-11-02 12:22:56,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:56,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 227 treesize of output 255 [2024-11-02 12:22:56,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 128 [2024-11-02 12:22:56,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 126 [2024-11-02 12:22:57,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-02 12:22:57,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-02 12:22:57,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:57,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 8 [2024-11-02 12:22:57,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:57,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 8 [2024-11-02 12:22:58,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:22:58,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 89 treesize of output 359