./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/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_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:24:23,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:24:23,612 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 11:24:23,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:24:23,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:24:23,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:24:23,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:24:23,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:24:23,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:24:23,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:24:23,666 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:24:23,667 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:24:23,667 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:24:23,672 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:24:23,672 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:24:23,672 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:24:23,673 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:24:23,673 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:24:23,673 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:24:23,674 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:24:23,678 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:24:23,679 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:24:23,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 11:24:23,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 11:24:23,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:24:23,680 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:24:23,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:24:23,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:24:23,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:24:23,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 11:24:23,697 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 11:24:23,697 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 11:24:23,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:24:23,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 11:24:23,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:24:23,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:24:23,699 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:24:23,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:24:23,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:24:23,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:24:23,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:24:23,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:23,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:24:23,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:24:23,703 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:24:23,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:24:23,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:24:23,704 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:24:23,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:24:23,704 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_6030bfe5-b19c-4dff-8f96-dcfaa914c360/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-02 11:24:24,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:24:24,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:24:24,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:24:24,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:24:24,045 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:24:24,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-memsafety/list1.i Unable to find full path for "g++" [2024-11-02 11:24:26,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:26,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:26,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-02 11:24:26,470 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/834f73f0b/92b19a3cea614f49b8c41f321bf7f8ed/FLAG55f8298a7 [2024-11-02 11:24:26,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/834f73f0b/92b19a3cea614f49b8c41f321bf7f8ed [2024-11-02 11:24:26,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:26,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:26,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:26,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:26,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:26,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:26" (1/1) ... [2024-11-02 11:24:26,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e5d644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:26, skipping insertion in model container [2024-11-02 11:24:26,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:26" (1/1) ... [2024-11-02 11:24:26,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:27,174 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 11:24:27,181 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 11:24:27,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:27,204 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:27,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:27,346 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:27,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27 WrapperNode [2024-11-02 11:24:27,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:27,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:27,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:27,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:27,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,408 INFO L138 Inliner]: procedures = 264, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-02 11:24:27,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:27,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:27,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:27,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:27,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:27,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:27,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:27,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:27,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (1/1) ... [2024-11-02 11:24:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:27,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:27,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:24:27,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:24:27,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:24:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 11:24:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:24:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:24:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-02 11:24:27,535 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-02 11:24:27,535 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-02 11:24:27,535 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-02 11:24:27,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:27,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:27,538 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 11:24:27,787 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:27,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:28,316 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 11:24:28,317 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:28,481 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:28,481 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:24:28,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:28 BoogieIcfgContainer [2024-11-02 11:24:28,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:28,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:28,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:28,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:28,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:26" (1/3) ... [2024-11-02 11:24:28,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1e23f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:28, skipping insertion in model container [2024-11-02 11:24:28,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:27" (2/3) ... [2024-11-02 11:24:28,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1e23f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:28, skipping insertion in model container [2024-11-02 11:24:28,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:28" (3/3) ... [2024-11-02 11:24:28,500 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-02 11:24:28,518 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:28,518 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-02 11:24:28,519 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 11:24:28,652 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 11:24:28,701 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 74 transitions, 162 flow [2024-11-02 11:24:28,771 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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 11:24:28,840 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:28,854 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=None, 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;@71a83f4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:28,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-02 11:24:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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 11:24:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 11:24:28,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:28,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 11:24:28,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:28,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash 273116001, now seen corresponding path program 1 times [2024-11-02 11:24:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991936988] [2024-11-02 11:24:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:29,414 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 11:24:29,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:29,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991936988] [2024-11-02 11:24:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991936988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830133378] [2024-11-02 11:24:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:29,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:29,458 INFO L87 Difference]: Start difference. First operand has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:29,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:29,650 INFO L93 Difference]: Finished difference Result 219 states and 329 transitions. [2024-11-02 11:24:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:29,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-02 11:24:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:29,663 INFO L225 Difference]: With dead ends: 219 [2024-11-02 11:24:29,663 INFO L226 Difference]: Without dead ends: 144 [2024-11-02 11:24:29,667 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 11:24:29,670 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 75 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:29,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 56 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-02 11:24:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2024-11-02 11:24:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.978021978021978) internal successors, (180), 118 states have internal predecessors, (180), 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 11:24:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 180 transitions. [2024-11-02 11:24:29,715 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 180 transitions. Word has length 5 [2024-11-02 11:24:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:29,715 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 180 transitions. [2024-11-02 11:24:29,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 180 transitions. [2024-11-02 11:24:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 11:24:29,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:29,717 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 11:24:29,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:24:29,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:29,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash 273116002, now seen corresponding path program 1 times [2024-11-02 11:24:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408959593] [2024-11-02 11:24:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:29,983 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 11:24:29,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408959593] [2024-11-02 11:24:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408959593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:29,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:29,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733104288] [2024-11-02 11:24:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:29,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:29,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:29,989 INFO L87 Difference]: Start difference. First operand 119 states and 180 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:30,205 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2024-11-02 11:24:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:30,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-02 11:24:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:30,209 INFO L225 Difference]: With dead ends: 119 [2024-11-02 11:24:30,210 INFO L226 Difference]: Without dead ends: 115 [2024-11-02 11:24:30,210 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 11:24:30,214 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:30,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 40 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:24:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-02 11:24:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-02 11:24:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 89 states have (on average 1.9550561797752808) internal successors, (174), 114 states have internal predecessors, (174), 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 11:24:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 174 transitions. [2024-11-02 11:24:30,234 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 174 transitions. Word has length 5 [2024-11-02 11:24:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:30,235 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 174 transitions. [2024-11-02 11:24:30,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 174 transitions. [2024-11-02 11:24:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 11:24:30,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:30,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 11:24:30,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:24:30,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:30,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash -123338293, now seen corresponding path program 1 times [2024-11-02 11:24:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961926803] [2024-11-02 11:24:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:30,335 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 11:24:30,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961926803] [2024-11-02 11:24:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961926803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:30,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:30,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:24:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109383368] [2024-11-02 11:24:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:30,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:30,342 INFO L87 Difference]: Start difference. First operand 115 states and 174 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 11:24:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:30,442 INFO L93 Difference]: Finished difference Result 115 states and 174 transitions. [2024-11-02 11:24:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:30,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:30,444 INFO L225 Difference]: With dead ends: 115 [2024-11-02 11:24:30,444 INFO L226 Difference]: Without dead ends: 107 [2024-11-02 11:24:30,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:30,449 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:30,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-02 11:24:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-02 11:24:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.9058823529411764) internal successors, (162), 106 states have internal predecessors, (162), 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 11:24:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2024-11-02 11:24:30,470 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 6 [2024-11-02 11:24:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:30,471 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2024-11-02 11:24:30,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2024-11-02 11:24:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 11:24:30,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:30,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 11:24:30,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 11:24:30,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:30,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -123338292, now seen corresponding path program 1 times [2024-11-02 11:24:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169031973] [2024-11-02 11:24:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:30,584 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 11:24:30,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169031973] [2024-11-02 11:24:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169031973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:30,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:30,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:24:30,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191858419] [2024-11-02 11:24:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:30,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:30,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:30,589 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 11:24:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:30,685 INFO L93 Difference]: Finished difference Result 107 states and 162 transitions. [2024-11-02 11:24:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:30,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:30,687 INFO L225 Difference]: With dead ends: 107 [2024-11-02 11:24:30,687 INFO L226 Difference]: Without dead ends: 99 [2024-11-02 11:24:30,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:30,691 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:30,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-02 11:24:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-02 11:24:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.8518518518518519) internal successors, (150), 98 states have internal predecessors, (150), 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 11:24:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 150 transitions. [2024-11-02 11:24:30,699 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 150 transitions. Word has length 6 [2024-11-02 11:24:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:30,700 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 150 transitions. [2024-11-02 11:24:30,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 150 transitions. [2024-11-02 11:24:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 11:24:30,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:30,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:30,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 11:24:30,702 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:30,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1335114422, now seen corresponding path program 1 times [2024-11-02 11:24:30,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:30,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94409148] [2024-11-02 11:24:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:31,164 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 11:24:31,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94409148] [2024-11-02 11:24:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94409148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 11:24:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011498355] [2024-11-02 11:24:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:31,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 11:24:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:31,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 11:24:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-02 11:24:31,169 INFO L87 Difference]: Start difference. First operand 99 states and 150 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 11:24:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:31,739 INFO L93 Difference]: Finished difference Result 210 states and 321 transitions. [2024-11-02 11:24:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 11:24:31,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 10 [2024-11-02 11:24:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:31,741 INFO L225 Difference]: With dead ends: 210 [2024-11-02 11:24:31,741 INFO L226 Difference]: Without dead ends: 115 [2024-11-02 11:24:31,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-02 11:24:31,748 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 146 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:31,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 179 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:24:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-02 11:24:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2024-11-02 11:24:31,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 108 states have internal predecessors, (165), 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 11:24:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 165 transitions. [2024-11-02 11:24:31,768 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 165 transitions. Word has length 10 [2024-11-02 11:24:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:31,768 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 165 transitions. [2024-11-02 11:24:31,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 11:24:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 165 transitions. [2024-11-02 11:24:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 11:24:31,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:31,774 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:31,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 11:24:31,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1227185515, now seen corresponding path program 1 times [2024-11-02 11:24:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547959273] [2024-11-02 11:24:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:31,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:32,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547959273] [2024-11-02 11:24:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547959273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128544125] [2024-11-02 11:24:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:32,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:32,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:32,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:32,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 11:24:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:32,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-02 11:24:32,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:32,664 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 11:24:32,720 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-02 11:24:32,721 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 23 treesize of output 24 [2024-11-02 11:24:32,838 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-02 11:24:32,838 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-02 11:24:32,969 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-02 11:24:32,970 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 36 treesize of output 16 [2024-11-02 11:24:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:32,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:33,160 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 38 treesize of output 34 [2024-11-02 11:24:33,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 11:24:33,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 135 treesize of output 339 [2024-11-02 11:24:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128544125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750515888] [2024-11-02 11:24:34,609 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 11:24:34,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:24:34,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-02 11:24:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121938877] [2024-11-02 11:24:34,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:24:34,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 11:24:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:34,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 11:24:34,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-02 11:24:34,614 INFO L87 Difference]: Start difference. First operand 109 states and 165 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:35,286 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2024-11-02 11:24:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 11:24:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-02 11:24:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:35,288 INFO L225 Difference]: With dead ends: 140 [2024-11-02 11:24:35,289 INFO L226 Difference]: Without dead ends: 138 [2024-11-02 11:24:35,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-11-02 11:24:35,290 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 131 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:35,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 169 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:24:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-02 11:24:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 107. [2024-11-02 11:24:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 90 states have (on average 1.8) internal successors, (162), 106 states have internal predecessors, (162), 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 11:24:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2024-11-02 11:24:35,299 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 18 [2024-11-02 11:24:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:35,300 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2024-11-02 11:24:35,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2024-11-02 11:24:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 11:24:35,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:35,301 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:35,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 11:24:35,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 11:24:35,506 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:35,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1227185516, now seen corresponding path program 1 times [2024-11-02 11:24:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:35,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601705589] [2024-11-02 11:24:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:35,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:36,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601705589] [2024-11-02 11:24:36,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601705589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 11:24:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138951957] [2024-11-02 11:24:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 11:24:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:36,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 11:24:36,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 11:24:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:36,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-02 11:24:36,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:36,496 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-02 11:24:36,511 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 11:24:36,555 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-02 11:24:36,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-02 11:24:36,578 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-02 11:24:36,578 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 15 treesize of output 15 [2024-11-02 11:24:36,690 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-02 11:24:36,690 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 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-02 11:24:36,714 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-02 11:24:36,714 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 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-02 11:24:36,819 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-02 11:24:36,819 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 36 treesize of output 16 [2024-11-02 11:24:36,828 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-02 11:24:36,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-02 11:24:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:36,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 11:24:37,091 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 66 treesize of output 62 [2024-11-02 11:24:37,097 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 102 treesize of output 94 [2024-11-02 11:24:37,135 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 32 treesize of output 28 [2024-11-02 11:24:37,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-02 11:24:37,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 134 [2024-11-02 11:24:37,338 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 68 treesize of output 64 [2024-11-02 11:24:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:24:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138951957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 11:24:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [197159694] [2024-11-02 11:24:37,530 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 11:24:37,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 11:24:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-02 11:24:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444669355] [2024-11-02 11:24:37,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 11:24:37,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-02 11:24:37,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-02 11:24:37,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-02 11:24:37,537 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:38,411 INFO L93 Difference]: Finished difference Result 138 states and 207 transitions. [2024-11-02 11:24:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 11:24:38,412 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-02 11:24:38,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:38,413 INFO L225 Difference]: With dead ends: 138 [2024-11-02 11:24:38,414 INFO L226 Difference]: Without dead ends: 136 [2024-11-02 11:24:38,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2024-11-02 11:24:38,415 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:38,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 178 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 11:24:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-02 11:24:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 105. [2024-11-02 11:24:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 89 states have (on average 1.7865168539325842) internal successors, (159), 104 states have internal predecessors, (159), 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 11:24:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 159 transitions. [2024-11-02 11:24:38,425 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 159 transitions. Word has length 18 [2024-11-02 11:24:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:38,426 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 159 transitions. [2024-11-02 11:24:38,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 11:24:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 159 transitions. [2024-11-02 11:24:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-02 11:24:38,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:38,428 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 11:24:38,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:24:38,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 11:24:38,632 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:38,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash -288296412, now seen corresponding path program 1 times [2024-11-02 11:24:38,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:38,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640309663] [2024-11-02 11:24:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:39,029 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 11:24:39,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:24:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640309663] [2024-11-02 11:24:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640309663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:39,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:39,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 11:24:39,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270044436] [2024-11-02 11:24:39,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:39,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:24:39,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:24:39,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:24:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:24:39,037 INFO L87 Difference]: Start difference. First operand 105 states and 159 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 11:24:39,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:39,133 INFO L93 Difference]: Finished difference Result 112 states and 168 transitions. [2024-11-02 11:24:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:24:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2024-11-02 11:24:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:39,134 INFO L225 Difference]: With dead ends: 112 [2024-11-02 11:24:39,134 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 11:24:39,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 11:24:39,136 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:39,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 14 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:39,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 11:24:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 11:24:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.48) internal successors, (74), 50 states have internal predecessors, (74), 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 11:24:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2024-11-02 11:24:39,140 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 19 [2024-11-02 11:24:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:39,141 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2024-11-02 11:24:39,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 11:24:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2024-11-02 11:24:39,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 11:24:39,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:39,142 INFO L215 NwaCegarLoop]: trace histogram [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 11:24:39,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 11:24:39,143 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:39,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash -345652609, now seen corresponding path program 1 times [2024-11-02 11:24:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:24:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023953892] [2024-11-02 11:24:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:39,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:24:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:24:39,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 11:24:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:24:39,206 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 11:24:39,207 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 11:24:39,208 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2024-11-02 11:24:39,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2024-11-02 11:24:39,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2024-11-02 11:24:39,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2024-11-02 11:24:39,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2024-11-02 11:24:39,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2024-11-02 11:24:39,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2024-11-02 11:24:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2024-11-02 11:24:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2024-11-02 11:24:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2024-11-02 11:24:39,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2024-11-02 11:24:39,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2024-11-02 11:24:39,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2024-11-02 11:24:39,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2024-11-02 11:24:39,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2024-11-02 11:24:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 61 remaining) [2024-11-02 11:24:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (44 of 61 remaining) [2024-11-02 11:24:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2024-11-02 11:24:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2024-11-02 11:24:39,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2024-11-02 11:24:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2024-11-02 11:24:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2024-11-02 11:24:39,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (37 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (36 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (35 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (34 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (33 of 61 remaining) [2024-11-02 11:24:39,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (32 of 61 remaining) [2024-11-02 11:24:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (31 of 61 remaining) [2024-11-02 11:24:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (30 of 61 remaining) [2024-11-02 11:24:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (29 of 61 remaining) [2024-11-02 11:24:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2024-11-02 11:24:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2024-11-02 11:24:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2024-11-02 11:24:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2024-11-02 11:24:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2024-11-02 11:24:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2024-11-02 11:24:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2024-11-02 11:24:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2024-11-02 11:24:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2024-11-02 11:24:39,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2024-11-02 11:24:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2024-11-02 11:24:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2024-11-02 11:24:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2024-11-02 11:24:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2024-11-02 11:24:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2024-11-02 11:24:39,223 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr12ASSERT_VIOLATIONMEMORY_FREE (7 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr6ASSERT_VIOLATIONMEMORY_FREE (4 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2024-11-02 11:24:39,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2024-11-02 11:24:39,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location deleteErr9ASSERT_VIOLATIONMEMORY_FREE (0 of 61 remaining) [2024-11-02 11:24:39,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 11:24:39,229 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:39,295 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-02 11:24:39,296 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:24:39,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:24:39 BasicIcfg [2024-11-02 11:24:39,301 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:24:39,303 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:24:39,304 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:24:39,305 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:24:39,305 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:28" (3/4) ... [2024-11-02 11:24:39,307 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 11:24:39,309 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:24:39,309 INFO L158 Benchmark]: Toolchain (without parser) took 12813.83ms. Allocated memory was 138.4MB in the beginning and 276.8MB in the end (delta: 138.4MB). Free memory was 97.5MB in the beginning and 173.2MB in the end (delta: -75.6MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,310 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 138.4MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:24:39,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 850.02ms. Allocated memory is still 138.4MB. Free memory was 96.9MB in the beginning and 66.6MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.75ms. Allocated memory is still 138.4MB. Free memory was 66.6MB in the beginning and 64.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,311 INFO L158 Benchmark]: Boogie Preprocessor took 35.33ms. Allocated memory is still 138.4MB. Free memory was 64.0MB in the beginning and 62.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,311 INFO L158 Benchmark]: RCFGBuilder took 1040.59ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 62.4MB in the beginning and 145.7MB in the end (delta: -83.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,311 INFO L158 Benchmark]: TraceAbstraction took 10813.39ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 145.7MB in the beginning and 173.2MB in the end (delta: -27.4MB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. [2024-11-02 11:24:39,312 INFO L158 Benchmark]: Witness Printer took 6.25ms. Allocated memory is still 276.8MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:24:39,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 138.4MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 850.02ms. Allocated memory is still 138.4MB. Free memory was 96.9MB in the beginning and 66.6MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.75ms. Allocated memory is still 138.4MB. Free memory was 66.6MB in the beginning and 64.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.33ms. Allocated memory is still 138.4MB. Free memory was 64.0MB in the beginning and 62.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1040.59ms. Allocated memory was 138.4MB in the beginning and 190.8MB in the end (delta: 52.4MB). Free memory was 62.4MB in the beginning and 145.7MB in the end (delta: -83.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10813.39ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 145.7MB in the beginning and 173.2MB in the end (delta: -27.4MB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. * Witness Printer took 6.25ms. Allocated memory is still 276.8MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1069]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1069. Possible FailurePath: [L1070] 0 pthread_t id1, id2; [L1071] 0 struct item *list = ((void *)0); [L1072] FCALL, FORK 0 pthread_create(&id1, ((void *)0), build, list) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1048] 1 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={2:0}, plist={0:0}] [L1050] CALL 1 append(&list) [L1042] 1 struct item *elem = malloc(sizeof *elem); [L1043] EXPR 1 \read(**plist) VAL [\old(plist)={2:0}, elem={-1:0}, plist={2:0}] [L1043] 1 elem->next = *plist [L1044] EXPR 1 elem->next VAL [\old(plist)={2:0}, elem={-1:0}, plist={2:0}] [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1044] EXPR 1 (elem->next) ? elem->next->data : malloc(sizeof *elem) VAL [\old(plist)={2:0}, elem={-1:0}, plist={2:0}] [L1044] 1 elem->data = (elem->next) ? elem->next->data : malloc(sizeof *elem) [L1045] 1 *plist = elem [L1050] RET 1 append(&list) [L1051] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1073] FCALL, JOIN 1 pthread_join(id1, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, argc=9, id1=-1, list={0:0}] [L1074] FCALL, FORK 0 pthread_create(&id2, ((void *)0), delete, list) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, argc=9, id1=-1, id2=0, list={0:0}] [L1055] 2 struct item *list = (struct item *)plist; VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1056] COND FALSE 2 !(\read(*list)) VAL [\old(plist)={0:0}, list={0:0}, plist={0:0}] [L1062] COND FALSE 2 !(\read(*list)) [L1075] FCALL, JOIN 2 pthread_join(id2, ((void *)0)) VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] [L1076] 0 return 0; VAL [\old(argc)=9, \old(argv)={10:11}, \old(plist)={0:0}, \result=0, \result={0:0}, argc=9, id1=-1, id2=0, list={0:0}, list={0:0}, plist={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1072]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1074]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1059]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 130 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 567 mSDsluCounter, 736 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 553 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1343 IncrementalHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 183 mSDtfsCounter, 1343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 147 ConstructedInterpolants, 14 QuantifiedInterpolants, 1699 SizeOfPredicates, 34 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 11:24:39,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/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_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:24:41,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:24:42,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-02 11:24:42,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:24:42,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:24:42,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:24:42,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:24:42,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:24:42,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:24:42,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:24:42,129 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:24:42,130 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:24:42,130 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:24:42,131 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:24:42,131 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:24:42,131 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:24:42,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 11:24:42,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 11:24:42,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:24:42,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:24:42,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:24:42,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:24:42,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:24:42,143 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 11:24:42,144 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 11:24:42,144 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 11:24:42,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:24:42,145 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 11:24:42,145 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 11:24:42,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:24:42,146 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 11:24:42,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:24:42,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:24:42,149 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:24:42,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:24:42,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 11:24:42,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:24:42,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:24:42,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:42,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:24:42,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:24:42,153 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 11:24:42,154 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 11:24:42,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:24:42,154 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:24:42,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:24:42,155 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_6030bfe5-b19c-4dff-8f96-dcfaa914c360/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2024-11-02 11:24:42,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:24:42,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:24:42,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:24:42,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:24:42,718 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:24:42,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-memsafety/list1.i Unable to find full path for "g++" [2024-11-02 11:24:44,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:24:45,168 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:24:45,172 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/sv-benchmarks/c/pthread-memsafety/list1.i [2024-11-02 11:24:45,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/3607bb044/c0d719a9c17349bb9d38156c242f3650/FLAG719c9b6f0 [2024-11-02 11:24:45,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/data/3607bb044/c0d719a9c17349bb9d38156c242f3650 [2024-11-02 11:24:45,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:24:45,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:24:45,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:45,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:24:45,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:24:45,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:45" (1/1) ... [2024-11-02 11:24:45,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12666959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:45, skipping insertion in model container [2024-11-02 11:24:45,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:24:45" (1/1) ... [2024-11-02 11:24:45,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:24:46,027 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 11:24:46,035 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 11:24:46,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:46,067 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:24:46,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:24:46,223 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:24:46,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46 WrapperNode [2024-11-02 11:24:46,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:24:46,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:46,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:24:46,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:24:46,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,291 INFO L138 Inliner]: procedures = 265, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-02 11:24:46,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:24:46,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:24:46,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:24:46,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:24:46,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:24:46,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:24:46,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:24:46,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:24:46,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (1/1) ... [2024-11-02 11:24:46,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:24:46,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:24:46,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:24:46,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:24:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:24:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:24:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:24:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 11:24:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:24:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:24:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2024-11-02 11:24:46,429 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2024-11-02 11:24:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure build [2024-11-02 11:24:46,429 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2024-11-02 11:24:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:24:46,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:24:46,431 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 11:24:46,623 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:24:46,625 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:24:47,096 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 11:24:47,096 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:24:47,281 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:24:47,282 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:24:47,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:47 BoogieIcfgContainer [2024-11-02 11:24:47,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:24:47,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:24:47,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:24:47,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:24:47,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:24:45" (1/3) ... [2024-11-02 11:24:47,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd51e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:47, skipping insertion in model container [2024-11-02 11:24:47,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:24:46" (2/3) ... [2024-11-02 11:24:47,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cd51e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:24:47, skipping insertion in model container [2024-11-02 11:24:47,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:24:47" (3/3) ... [2024-11-02 11:24:47,292 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2024-11-02 11:24:47,312 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:24:47,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-02 11:24:47,312 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 11:24:47,440 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 11:24:47,478 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 74 transitions, 162 flow [2024-11-02 11:24:47,516 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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 11:24:47,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:24:47,557 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=None, 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;@71bad76c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:24:47,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-02 11:24:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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 11:24:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 11:24:47,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:47,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 11:24:47,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:47,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash 273116001, now seen corresponding path program 1 times [2024-11-02 11:24:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946187392] [2024-11-02 11:24:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:47,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:47,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-02 11:24:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:47,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 11:24:47,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:47,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-02 11:24:47,883 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-02 11:24:47,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-02 11:24:47,920 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 11:24:47,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:47,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:47,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946187392] [2024-11-02 11:24:47,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946187392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:47,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546676037] [2024-11-02 11:24:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:47,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:47,968 INFO L87 Difference]: Start difference. First operand has 123 states, 93 states have (on average 2.021505376344086) internal successors, (188), 122 states have internal predecessors, (188), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:48,301 INFO L93 Difference]: Finished difference Result 219 states and 329 transitions. [2024-11-02 11:24:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-02 11:24:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:48,316 INFO L225 Difference]: With dead ends: 219 [2024-11-02 11:24:48,317 INFO L226 Difference]: Without dead ends: 144 [2024-11-02 11:24:48,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:24:48,324 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 75 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:48,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 56 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 11:24:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-02 11:24:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2024-11-02 11:24:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.978021978021978) internal successors, (180), 118 states have internal predecessors, (180), 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 11:24:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 180 transitions. [2024-11-02 11:24:48,399 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 180 transitions. Word has length 5 [2024-11-02 11:24:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:48,400 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 180 transitions. [2024-11-02 11:24:48,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 180 transitions. [2024-11-02 11:24:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 11:24:48,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:48,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 11:24:48,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-02 11:24:48,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:48,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:48,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash 273116002, now seen corresponding path program 1 times [2024-11-02 11:24:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624021767] [2024-11-02 11:24:48,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:48,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:48,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:48,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:48,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-02 11:24:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:48,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 11:24:48,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:48,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-02 11:24:48,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-02 11:24:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 11:24:48,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-02 11:24:49,000 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-02 11:24:49,000 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 13 treesize of output 13 [2024-11-02 11:24:49,018 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 11:24:49,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:49,019 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:49,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624021767] [2024-11-02 11:24:49,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624021767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:49,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:49,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:24:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68532327] [2024-11-02 11:24:49,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:49,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 11:24:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 11:24:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 11:24:49,023 INFO L87 Difference]: Start difference. First operand 119 states and 180 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:49,337 INFO L93 Difference]: Finished difference Result 154 states and 231 transitions. [2024-11-02 11:24:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 11:24:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-11-02 11:24:49,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:49,340 INFO L225 Difference]: With dead ends: 154 [2024-11-02 11:24:49,341 INFO L226 Difference]: Without dead ends: 150 [2024-11-02 11:24:49,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:24:49,342 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:49,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 45 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 11:24:49,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-02 11:24:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2024-11-02 11:24:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.9893617021276595) internal successors, (187), 120 states have internal predecessors, (187), 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 11:24:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 187 transitions. [2024-11-02 11:24:49,364 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 187 transitions. Word has length 5 [2024-11-02 11:24:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:49,364 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 187 transitions. [2024-11-02 11:24:49,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 11:24:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 187 transitions. [2024-11-02 11:24:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 11:24:49,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:49,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 11:24:49,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-02 11:24:49,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:49,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:49,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -123338293, now seen corresponding path program 1 times [2024-11-02 11:24:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522263373] [2024-11-02 11:24:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:49,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:49,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:49,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:49,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-02 11:24:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:49,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 11:24:49,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:49,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-02 11:24:49,697 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 11:24:49,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:49,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522263373] [2024-11-02 11:24:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522263373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:49,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:49,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:24:49,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440421284] [2024-11-02 11:24:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:49,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:49,701 INFO L87 Difference]: Start difference. First operand 121 states and 187 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 11:24:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:49,833 INFO L93 Difference]: Finished difference Result 121 states and 187 transitions. [2024-11-02 11:24:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:49,835 INFO L225 Difference]: With dead ends: 121 [2024-11-02 11:24:49,836 INFO L226 Difference]: Without dead ends: 113 [2024-11-02 11:24:49,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:49,837 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:49,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 49 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-02 11:24:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-02 11:24:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.9222222222222223) internal successors, (173), 112 states have internal predecessors, (173), 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 11:24:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 173 transitions. [2024-11-02 11:24:49,846 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 173 transitions. Word has length 6 [2024-11-02 11:24:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:49,846 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 173 transitions. [2024-11-02 11:24:49,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 173 transitions. [2024-11-02 11:24:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 11:24:49,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:49,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 11:24:49,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-02 11:24:50,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:50,050 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -123338292, now seen corresponding path program 1 times [2024-11-02 11:24:50,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105832366] [2024-11-02 11:24:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:50,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-02 11:24:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:50,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 11:24:50,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:50,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-02 11:24:50,200 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 11:24:50,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:50,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:50,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105832366] [2024-11-02 11:24:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105832366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:50,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:50,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:24:50,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678101580] [2024-11-02 11:24:50,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:50,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 11:24:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 11:24:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:50,202 INFO L87 Difference]: Start difference. First operand 113 states and 173 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 11:24:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:50,354 INFO L93 Difference]: Finished difference Result 113 states and 173 transitions. [2024-11-02 11:24:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 11:24:50,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:50,356 INFO L225 Difference]: With dead ends: 113 [2024-11-02 11:24:50,356 INFO L226 Difference]: Without dead ends: 105 [2024-11-02 11:24:50,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 11:24:50,358 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:50,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 11:24:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-02 11:24:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-02 11:24:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.8488372093023255) internal successors, (159), 104 states have internal predecessors, (159), 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 11:24:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 159 transitions. [2024-11-02 11:24:50,374 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 159 transitions. Word has length 6 [2024-11-02 11:24:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:50,374 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 159 transitions. [2024-11-02 11:24:50,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 11:24:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 159 transitions. [2024-11-02 11:24:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 11:24:50,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:50,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:50,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-02 11:24:50,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:50,576 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:50,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:50,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1335114422, now seen corresponding path program 1 times [2024-11-02 11:24:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943387343] [2024-11-02 11:24:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:50,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:50,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:50,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-02 11:24:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:50,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-02 11:24:50,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:50,907 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-02 11:24:50,907 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 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-02 11:24:50,934 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-02 11:24:50,936 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 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-02 11:24:51,062 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 11:24:51,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:51,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:51,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943387343] [2024-11-02 11:24:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943387343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:51,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:51,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 11:24:51,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667513733] [2024-11-02 11:24:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:51,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 11:24:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 11:24:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-02 11:24:51,067 INFO L87 Difference]: Start difference. First operand 105 states and 159 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 11:24:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:52,196 INFO L93 Difference]: Finished difference Result 222 states and 339 transitions. [2024-11-02 11:24:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 11:24:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 10 [2024-11-02 11:24:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:52,198 INFO L225 Difference]: With dead ends: 222 [2024-11-02 11:24:52,198 INFO L226 Difference]: Without dead ends: 121 [2024-11-02 11:24:52,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-02 11:24:52,200 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 151 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:52,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 182 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 11:24:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-02 11:24:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2024-11-02 11:24:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.8125) internal successors, (174), 114 states have internal predecessors, (174), 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 11:24:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 174 transitions. [2024-11-02 11:24:52,209 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 174 transitions. Word has length 10 [2024-11-02 11:24:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:52,210 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 174 transitions. [2024-11-02 11:24:52,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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 11:24:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 174 transitions. [2024-11-02 11:24:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 11:24:52,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:52,211 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:52,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-02 11:24:52,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:52,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:52,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1335115542, now seen corresponding path program 1 times [2024-11-02 11:24:52,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:52,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088733941] [2024-11-02 11:24:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:52,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:52,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-02 11:24:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:24:52,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 11:24:52,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:24:52,558 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 1 [2024-11-02 11:24:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 11:24:52,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-02 11:24:52,671 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-02 11:24:52,671 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 13 treesize of output 13 [2024-11-02 11:24:52,695 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 11:24:52,696 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:24:52,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:24:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088733941] [2024-11-02 11:24:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088733941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:24:52,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:24:52,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 11:24:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526222873] [2024-11-02 11:24:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:24:52,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 11:24:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:24:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 11:24:52,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-02 11:24:52,699 INFO L87 Difference]: Start difference. First operand 115 states and 174 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 11:24:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:24:52,926 INFO L93 Difference]: Finished difference Result 115 states and 174 transitions. [2024-11-02 11:24:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:24:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2024-11-02 11:24:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:24:52,928 INFO L225 Difference]: With dead ends: 115 [2024-11-02 11:24:52,929 INFO L226 Difference]: Without dead ends: 113 [2024-11-02 11:24:52,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-02 11:24:52,930 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 11:24:52,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 78 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 11:24:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-02 11:24:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2024-11-02 11:24:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 108 states have internal predecessors, (165), 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 11:24:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 165 transitions. [2024-11-02 11:24:52,939 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 165 transitions. Word has length 10 [2024-11-02 11:24:52,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:24:52,939 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 165 transitions. [2024-11-02 11:24:52,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 11:24:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 165 transitions. [2024-11-02 11:24:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 11:24:52,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:24:52,941 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:24:52,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-02 11:24:53,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:53,145 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-02 11:24:53,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:24:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1227185515, now seen corresponding path program 1 times [2024-11-02 11:24:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:24:53,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525227659] [2024-11-02 11:24:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:24:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-02 11:24:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:24:53,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-02 11:24:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6030bfe5-b19c-4dff-8f96-dcfaa914c360/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process