./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/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_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/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_db21f3d9-b51a-4974-81fe-875a15aab65b/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 cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:53,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:53,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:53,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:53,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:53,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:53,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:53,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:53,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:53,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:53,660 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:53,662 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:53,662 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:53,665 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:53,666 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:53,667 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:53,667 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:53,667 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:53,668 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:53,668 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:53,672 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:53,673 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:53,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:53,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:53,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:53,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:53,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:53,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:53,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:53,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:53,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:53,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:53,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:53,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:53,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:53,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:53,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:53,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:53,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:53,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:53,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:53,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:53,683 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:53,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:53,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:53,684 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:53,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:53,685 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_db21f3d9-b51a-4974-81fe-875a15aab65b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2024-11-02 12:27:54,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:54,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:54,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:54,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:54,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:54,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-sets/test_mutex.i Unable to find full path for "g++" [2024-11-02 12:27:56,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:56,972 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:56,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i [2024-11-02 12:27:57,012 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/data/dc22d863c/9f7b17bffc9a460f85f3ba1b66b123f5/FLAG5e653b06b [2024-11-02 12:27:57,170 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/data/dc22d863c/9f7b17bffc9a460f85f3ba1b66b123f5 [2024-11-02 12:27:57,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:57,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:57,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:57,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:57,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:57,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:57,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129e2d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57, skipping insertion in model container [2024-11-02 12:27:57,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:57,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:57,819 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[25842,25855] [2024-11-02 12:27:57,828 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[25967,25980] [2024-11-02 12:27:57,830 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[26082,26095] [2024-11-02 12:27:57,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:57,849 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:57,928 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[25842,25855] [2024-11-02 12:27:57,930 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[25967,25980] [2024-11-02 12:27:57,934 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_db21f3d9-b51a-4974-81fe-875a15aab65b/sv-benchmarks/c/ldv-sets/test_mutex.i[26082,26095] [2024-11-02 12:27:57,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:57,974 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:57,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57 WrapperNode [2024-11-02 12:27:57,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:57,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:57,977 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:57,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:57,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,058 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 140 [2024-11-02 12:27:58,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:58,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:58,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:58,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:58,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:58,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:58,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:58,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:58,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (1/1) ... [2024-11-02 12:27:58,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:58,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:58,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:58,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-02 12:27:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-02 12:27:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-02 12:27:58,214 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-02 12:27:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:27:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-02 12:27:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-02 12:27:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:27:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-02 12:27:58,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-02 12:27:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:27:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:27:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:27:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-02 12:27:58,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-02 12:27:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:58,372 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:58,375 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:58,762 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:58,763 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:58,933 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:58,933 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:27:58,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:58 BoogieIcfgContainer [2024-11-02 12:27:58,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:58,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:58,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:58,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:58,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:57" (1/3) ... [2024-11-02 12:27:58,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60755fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:58, skipping insertion in model container [2024-11-02 12:27:58,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:57" (2/3) ... [2024-11-02 12:27:58,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60755fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:58, skipping insertion in model container [2024-11-02 12:27:58,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:58" (3/3) ... [2024-11-02 12:27:58,946 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2024-11-02 12:27:58,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:58,978 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-02 12:27:59,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:59,090 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;@5b3186f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:59,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-02 12:27:59,095 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) [2024-11-02 12:27:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 12:27:59,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:59,105 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:59,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:59,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -380833791, now seen corresponding path program 1 times [2024-11-02 12:27:59,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414539543] [2024-11-02 12:27:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:59,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:59,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:59,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414539543] [2024-11-02 12:27:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414539543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:59,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:59,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167590242] [2024-11-02 12:27:59,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:59,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:59,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:59,677 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) [2024-11-02 12:27:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:59,836 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2024-11-02 12:27:59,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:59,839 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 [2024-11-02 12:27:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:59,850 INFO L225 Difference]: With dead ends: 96 [2024-11-02 12:27:59,850 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:27:59,854 INFO L431 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 [2024-11-02 12:27:59,862 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-02 12:27:59,864 INFO L433 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] [2024-11-02 12:27:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:27:59,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 12:27:59,916 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) [2024-11-02 12:27:59,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2024-11-02 12:27:59,922 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 19 [2024-11-02 12:27:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:59,924 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2024-11-02 12:27:59,925 INFO L472 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) [2024-11-02 12:27:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2024-11-02 12:27:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:27:59,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:59,928 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:59,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:59,929 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:59,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1943186129, now seen corresponding path program 1 times [2024-11-02 12:27:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94938655] [2024-11-02 12:27:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:28:00,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:00,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94938655] [2024-11-02 12:28:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94938655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:28:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:28:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:28:00,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609012493] [2024-11-02 12:28:00,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:28:00,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:28:00,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:28:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:28:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:28:00,413 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) [2024-11-02 12:28:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:28:00,888 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2024-11-02 12:28:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:28:00,889 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 [2024-11-02 12:28:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:28:00,892 INFO L225 Difference]: With dead ends: 145 [2024-11-02 12:28:00,893 INFO L226 Difference]: Without dead ends: 100 [2024-11-02 12:28:00,894 INFO L431 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 [2024-11-02 12:28:00,896 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:28:00,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 155 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:28:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-02 12:28:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-11-02 12:28:00,932 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) [2024-11-02 12:28:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2024-11-02 12:28:00,937 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 20 [2024-11-02 12:28:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:28:00,937 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2024-11-02 12:28:00,938 INFO L472 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) [2024-11-02 12:28:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2024-11-02 12:28:00,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-02 12:28:00,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:28:00,941 INFO L215 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] [2024-11-02 12:28:00,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:28:00,942 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:28:00,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:28:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1431664665, now seen corresponding path program 1 times [2024-11-02 12:28:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:28:00,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024330629] [2024-11-02 12:28:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:28:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:28:05,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:28:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024330629] [2024-11-02 12:28:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024330629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835044013] [2024-11-02 12:28:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:28:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:28:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:28:05,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:28:05,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db21f3d9-b51a-4974-81fe-875a15aab65b/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:28:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:28:05,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-02 12:28:05,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:28:06,048 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-02 12:28:06,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-02 12:28:06,442 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-02 12:28:06,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-02 12:28:07,575 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 31 treesize of output 51 [2024-11-02 12:28:07,596 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 65 treesize of output 57 [2024-11-02 12:28:07,637 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 36 treesize of output 44 [2024-11-02 12:28:07,649 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 65 treesize of output 57 [2024-11-02 12:28:07,674 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 31 treesize of output 44 [2024-11-02 12:28:07,686 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 65 treesize of output 57 [2024-11-02 12:28:07,722 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 29 treesize of output 37 [2024-11-02 12:28:07,728 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:28:07,732 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 17 [2024-11-02 12:28:07,738 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 8 treesize of output 7 [2024-11-02 12:28:07,752 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 24 treesize of output 37 [2024-11-02 12:28:07,759 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:28:07,766 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:28:07,767 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 32 treesize of output 17 [2024-11-02 12:28:07,776 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 8 treesize of output 7 [2024-11-02 12:28:10,184 INFO L349 Elim1Store]: treesize reduction 576, result has 35.1 percent of original size [2024-11-02 12:28:10,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 1838 treesize of output 1574 [2024-11-02 12:28:10,646 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-02 12:28:11,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:28:11,217 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-02 12:28:11,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:28:11,229 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 190 treesize of output 161 [2024-11-02 12:28:11,243 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 12 treesize of output 1 [2024-11-02 12:28:11,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2024-11-02 12:28:11,487 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 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-02 12:28:11,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 90 treesize of output 84 [2024-11-02 12:28:12,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:28:12,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:28:12,372 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-02 12:28:12,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 451 treesize of output 369 [2024-11-02 12:28:12,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 330 treesize of output 307 [2024-11-02 12:28:12,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 177 [2024-11-02 12:28:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:28:15,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:28:17,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:28:17,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 62 treesize of output 50 [2024-11-02 12:28:17,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 12:28:17,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 63 [2024-11-02 12:28:17,194 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 37 treesize of output 33 [2024-11-02 12:28:17,276 WARN L851 $PredicateComparison]: unable to prove that (and (or (< |c_ULTIMATE.start_foo_~m2~0#1.offset| 4) (forall ((|v___ldv_list_add_#in~new.base_9| Int) (v_ArrVal_115 (Array Int Int)) (v_ArrVal_117 Int)) (not (= |c_ULTIMATE.start_foo_~m2~0#1.base| (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9| (store (select |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9|) 0 |c_ULTIMATE.start_foo_~m1~0#1.base|)))) (let ((.cse1 (select (select .cse2 |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (store (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_115) |v___ldv_list_add_#in~new.base_9| (store (store (select (store .cse2 .cse1 v_ArrVal_115) |v___ldv_list_add_#in~new.base_9|) 4 v_ArrVal_117) 8 |c_~#mutexes~0.base|)))))) (store .cse0 |c_~#mutexes~0.base| (store (select .cse0 |c_~#mutexes~0.base|) |c_~#mutexes~0.offset| |v___ldv_list_add_#in~new.base_9|))) |v___ldv_list_add_#in~new.base_9|) 0))))) (forall ((|v___ldv_list_add_#in~new.base_9| Int) (v_ArrVal_115 (Array Int Int))) (or (not (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9| (store (select |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9|) 0 |c_ULTIMATE.start_foo_~m1~0#1.base|)))) (store .cse3 (select (select .cse3 |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) v_ArrVal_115)) |v___ldv_list_add_#in~new.base_9|) 0) |c_ULTIMATE.start_foo_~m2~0#1.base|)) (= |c_~#mutexes~0.base| |v___ldv_list_add_#in~new.base_9|))) (or (forall ((|v___ldv_list_add_#in~new.base_9| Int) (v_ArrVal_115 (Array Int Int))) (not (= (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9| (store (select |c_#memory_$Pointer$.base| |v___ldv_list_add_#in~new.base_9|) 0 |c_ULTIMATE.start_foo_~m1~0#1.base|)))) (store .cse4 (select (select .cse4 |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) v_ArrVal_115)) |v___ldv_list_add_#in~new.base_9|) 0) |c_ULTIMATE.start_foo_~m2~0#1.base|))) (= |c_~#mutexes~0.offset| 0))) is different from false [2024-11-02 12:28:17,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835044013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:28:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [735000621] [2024-11-02 12:28:17,308 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-02 12:28:17,308 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:28:17,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:28:17,320 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:28:17,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:28:18,473 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_lock with input of size 12 for LOIs [2024-11-02 12:28:18,877 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 75 for LOIs [2024-11-02 12:28:18,909 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 26 for LOIs [2024-11-02 12:28:18,937 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 16 for LOIs [2024-11-02 12:28:19,018 INFO L180 IcfgInterpreter]: Interpretation finished