./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E --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 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:13:11,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:13:11,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:13:11,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:13:11,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:13:11,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:13:11,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:13:11,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:13:11,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:13:11,698 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:13:11,698 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:13:11,699 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:13:11,699 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:13:11,699 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:13:11,699 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:13:11,699 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:13:11,699 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:13:11,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:13:11,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:13:11,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:13:11,703 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:13:11,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:13:11,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:13:11,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:13:11,705 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:13:11,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:13:11,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:13:11,706 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:13:11,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:13:11,706 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E 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 -> 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 [2024-11-14 03:13:12,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:13:12,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:13:12,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:13:12,073 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:13:12,073 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:13:12,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i Unable to find full path for "g++" [2024-11-14 03:13:14,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:13:14,793 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:13:14,796 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i [2024-11-14 03:13:14,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/data/cbf155e3e/05743733ce3f416f8529ebb133e6421e/FLAG3bee5ce79 [2024-11-14 03:13:14,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/data/cbf155e3e/05743733ce3f416f8529ebb133e6421e [2024-11-14 03:13:14,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:13:14,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:13:14,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:13:14,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:13:14,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:13:14,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:13:14" (1/1) ... [2024-11-14 03:13:14,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bde077c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:14, skipping insertion in model container [2024-11-14 03:13:14,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:13:14" (1/1) ... [2024-11-14 03:13:14,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:13:16,305 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:13:16,340 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:13:16,366 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:13:16,495 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:13:16,555 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:13:16,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:13:16,639 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:13:17,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:13:17,252 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:13:17,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17 WrapperNode [2024-11-14 03:13:17,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:13:17,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:13:17,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:13:17,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:13:17,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,525 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3380 [2024-11-14 03:13:17,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:13:17,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:13:17,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:13:17,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:13:17,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:13:17,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:13:17,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:13:17,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:13:17,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (1/1) ... [2024-11-14 03:13:17,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:13:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:17,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:13:17,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:13:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-14 03:13:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-14 03:13:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 03:13:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-14 03:13:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 03:13:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 03:13:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:13:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-14 03:13:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-14 03:13:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 03:13:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-14 03:13:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-14 03:13:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-14 03:13:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:13:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:13:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-14 03:13:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-14 03:13:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:13:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:13:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 03:13:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-14 03:13:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-14 03:13:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-14 03:13:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-14 03:13:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-14 03:13:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-14 03:13:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:13:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-14 03:13:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:13:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-14 03:13:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:13:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-14 03:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-14 03:13:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-14 03:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-14 03:13:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-14 03:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-14 03:13:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-14 03:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-14 03:13:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-14 03:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-14 03:13:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-14 03:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 03:13:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-14 03:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-14 03:13:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-14 03:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:13:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:13:18,437 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:13:18,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:13:25,564 INFO L? ?]: Removed 650 outVars from TransFormulas that were not future-live. [2024-11-14 03:13:25,565 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:13:26,757 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:13:26,758 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 03:13:26,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:13:26 BoogieIcfgContainer [2024-11-14 03:13:26,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:13:26,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:13:26,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:13:26,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:13:26,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:13:14" (1/3) ... [2024-11-14 03:13:26,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585b71fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:13:26, skipping insertion in model container [2024-11-14 03:13:26,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:13:17" (2/3) ... [2024-11-14 03:13:26,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585b71fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:13:26, skipping insertion in model container [2024-11-14 03:13:26,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:13:26" (3/3) ... [2024-11-14 03:13:26,773 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outl_p.i [2024-11-14 03:13:26,795 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:13:26,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ddv_machzwd_outl_p.i that has 29 procedures, 578 locations, 1 initial locations, 4 loop locations, and 205 error locations. [2024-11-14 03:13:26,886 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:13:26,906 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;@260e9ee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:13:26,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-14 03:13:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-14 03:13:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:13:26,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:26,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:13:26,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:13:26,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 44049359, now seen corresponding path program 1 times [2024-11-14 03:13:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180145750] [2024-11-14 03:13:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:32,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:32,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180145750] [2024-11-14 03:13:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180145750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:13:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:13:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:13:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412913581] [2024-11-14 03:13:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:13:32,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:13:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:13:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:13:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:13:32,075 INFO L87 Difference]: Start difference. First operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:13:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:34,542 INFO L93 Difference]: Finished difference Result 1037 states and 1237 transitions. [2024-11-14 03:13:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:13:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:13:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:34,565 INFO L225 Difference]: With dead ends: 1037 [2024-11-14 03:13:34,566 INFO L226 Difference]: Without dead ends: 1035 [2024-11-14 03:13:34,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:13:34,571 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 581 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:34,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1713 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 03:13:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-14 03:13:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 843. [2024-11-14 03:13:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 450 states have (on average 2.0044444444444443) internal successors, (902), 672 states have internal predecessors, (902), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-14 03:13:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1178 transitions. [2024-11-14 03:13:34,698 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1178 transitions. Word has length 4 [2024-11-14 03:13:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:34,698 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1178 transitions. [2024-11-14 03:13:34,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:13:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1178 transitions. [2024-11-14 03:13:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 03:13:34,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:34,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 03:13:34,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:13:34,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:13:34,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash 44049360, now seen corresponding path program 1 times [2024-11-14 03:13:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:34,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568516555] [2024-11-14 03:13:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:39,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:39,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568516555] [2024-11-14 03:13:39,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568516555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:13:39,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:13:39,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:13:39,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202592280] [2024-11-14 03:13:39,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:13:39,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:13:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:13:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:13:39,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:13:39,495 INFO L87 Difference]: Start difference. First operand 843 states and 1178 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:13:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:41,311 INFO L93 Difference]: Finished difference Result 961 states and 1256 transitions. [2024-11-14 03:13:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:13:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 03:13:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:41,320 INFO L225 Difference]: With dead ends: 961 [2024-11-14 03:13:41,320 INFO L226 Difference]: Without dead ends: 961 [2024-11-14 03:13:41,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:13:41,322 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 234 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:41,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1933 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-14 03:13:41,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-11-14 03:13:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 903. [2024-11-14 03:13:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 478 states have (on average 1.9644351464435146) internal successors, (939), 701 states have internal predecessors, (939), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:13:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1253 transitions. [2024-11-14 03:13:41,384 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1253 transitions. Word has length 4 [2024-11-14 03:13:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:41,385 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1253 transitions. [2024-11-14 03:13:41,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:13:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1253 transitions. [2024-11-14 03:13:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:13:41,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:41,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:41,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:13:41,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:13:41,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 108704201, now seen corresponding path program 1 times [2024-11-14 03:13:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:41,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133598088] [2024-11-14 03:13:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:44,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:44,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133598088] [2024-11-14 03:13:44,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133598088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:13:44,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:13:44,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:13:44,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256649357] [2024-11-14 03:13:44,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:13:44,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:13:44,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:13:44,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:13:44,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:13:44,491 INFO L87 Difference]: Start difference. First operand 903 states and 1253 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:13:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:45,713 INFO L93 Difference]: Finished difference Result 1088 states and 1305 transitions. [2024-11-14 03:13:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:13:45,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:13:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:45,722 INFO L225 Difference]: With dead ends: 1088 [2024-11-14 03:13:45,722 INFO L226 Difference]: Without dead ends: 1088 [2024-11-14 03:13:45,723 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 [2024-11-14 03:13:45,724 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 565 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:45,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 929 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:13:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-11-14 03:13:45,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 902. [2024-11-14 03:13:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 478 states have (on average 1.9539748953974896) internal successors, (934), 700 states have internal predecessors, (934), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:13:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1248 transitions. [2024-11-14 03:13:45,780 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1248 transitions. Word has length 9 [2024-11-14 03:13:45,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:45,781 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1248 transitions. [2024-11-14 03:13:45,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:13:45,781 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1248 transitions. [2024-11-14 03:13:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 03:13:45,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:45,782 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:45,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:13:45,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:13:45,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:45,784 INFO L85 PathProgramCache]: Analyzing trace with hash 108704202, now seen corresponding path program 1 times [2024-11-14 03:13:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417882433] [2024-11-14 03:13:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:49,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:49,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417882433] [2024-11-14 03:13:49,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417882433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:13:49,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:13:49,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:13:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409514606] [2024-11-14 03:13:49,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:13:49,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:13:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:13:49,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:13:49,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:13:49,694 INFO L87 Difference]: Start difference. First operand 902 states and 1248 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:13:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:51,271 INFO L93 Difference]: Finished difference Result 963 states and 1260 transitions. [2024-11-14 03:13:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:13:51,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-11-14 03:13:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:51,280 INFO L225 Difference]: With dead ends: 963 [2024-11-14 03:13:51,280 INFO L226 Difference]: Without dead ends: 963 [2024-11-14 03:13:51,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:13:51,283 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 231 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:51,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1484 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 03:13:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2024-11-14 03:13:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 905. [2024-11-14 03:13:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 481 states have (on average 1.948024948024948) internal successors, (937), 703 states have internal predecessors, (937), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-14 03:13:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1251 transitions. [2024-11-14 03:13:51,333 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1251 transitions. Word has length 9 [2024-11-14 03:13:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:51,333 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1251 transitions. [2024-11-14 03:13:51,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:13:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1251 transitions. [2024-11-14 03:13:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:13:51,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:51,334 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:51,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:13:51,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-14 03:13:51,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1386554291, now seen corresponding path program 1 times [2024-11-14 03:13:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:13:51,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592352118] [2024-11-14 03:13:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:13:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:54,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:13:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592352118] [2024-11-14 03:13:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592352118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:13:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340458902] [2024-11-14 03:13:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:54,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:54,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:13:54,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca663943-d3a9-4ed8-a0f1-6bf47c1c9c23/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:13:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:58,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 5469 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:13:58,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:58,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:13:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340458902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [524007502] [2024-11-14 03:13:58,582 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2024-11-14 03:13:58,582 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:13:58,587 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:13:58,593 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:13:58,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:15:59,871 WARN L286 SmtUtils]: Spent 9.59s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:17:33,326 WARN L286 SmtUtils]: Spent 7.00s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:18:51,698 WARN L286 SmtUtils]: Spent 9.24s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:20:30,221 WARN L286 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:21:14,955 WARN L286 SmtUtils]: Spent 15.45s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:21:30,707 WARN L286 SmtUtils]: Spent 15.73s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:21:53,523 WARN L286 SmtUtils]: Spent 22.77s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:22:08,498 WARN L286 SmtUtils]: Spent 14.96s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:22:24,935 WARN L286 SmtUtils]: Spent 16.42s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:22:49,416 WARN L286 SmtUtils]: Spent 24.45s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)