./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ --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 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:59,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:59,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:11:59,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:59,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:00,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:00,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:00,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:00,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:00,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:00,031 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:00,032 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:00,033 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:00,033 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:12:00,034 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:00,035 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:00,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:12:00,036 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:12:00,037 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:00,038 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:12:00,039 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:12:00,040 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:12:00,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:12:00,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:12:00,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:00,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:00,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:00,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:00,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:00,045 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:12:00,046 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:12:00,046 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:12:00,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:00,047 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:12:00,048 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:12:00,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:00,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:00,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:00,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:00,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:00,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:00,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:00,051 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:12:00,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:12:00,052 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:00,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:00,053 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_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2023-11-19 04:12:00,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:00,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:00,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:00,540 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:00,540 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:00,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/memsafety/test-0234-2.i [2023-11-19 04:12:04,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:04,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:04,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/sv-benchmarks/c/memsafety/test-0234-2.i [2023-11-19 04:12:04,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/data/2cd9c1f8a/5c507ec46a974685a0595d29922a12a1/FLAG202fbbb55 [2023-11-19 04:12:04,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/data/2cd9c1f8a/5c507ec46a974685a0595d29922a12a1 [2023-11-19 04:12:04,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:04,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:04,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:04,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:04,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:04,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:04" (1/1) ... [2023-11-19 04:12:04,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2304eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:04, skipping insertion in model container [2023-11-19 04:12:04,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:04" (1/1) ... [2023-11-19 04:12:04,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:05,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:05,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:12:05,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:05,569 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:12:05,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05 WrapperNode [2023-11-19 04:12:05,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:05,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:05,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:12:05,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:12:05,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,649 INFO L138 Inliner]: procedures = 188, calls = 58, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 206 [2023-11-19 04:12:05,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:05,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:12:05,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:12:05,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:12:05,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:12:05,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:12:05,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:12:05,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:12:05,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (1/1) ... [2023-11-19 04:12:05,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:05,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:05,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:12:05,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:12:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:12:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:12:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:12:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:12:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-11-19 04:12:05,819 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-11-19 04:12:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:12:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:12:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:12:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:12:05,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:12:06,001 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:12:06,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:12:06,663 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:12:06,766 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:12:06,766 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-19 04:12:06,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:06 BoogieIcfgContainer [2023-11-19 04:12:06,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:12:06,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:12:06,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:12:06,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:12:06,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:12:04" (1/3) ... [2023-11-19 04:12:06,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:06, skipping insertion in model container [2023-11-19 04:12:06,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:05" (2/3) ... [2023-11-19 04:12:06,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568e1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:06, skipping insertion in model container [2023-11-19 04:12:06,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:06" (3/3) ... [2023-11-19 04:12:06,787 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2023-11-19 04:12:06,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:12:06,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-11-19 04:12:06,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:12:06,989 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@5649bfa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:12:06,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2023-11-19 04:12:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 72 states have (on average 2.263888888888889) internal successors, (163), 142 states have internal predecessors, (163), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:12:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:12:07,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:07,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:12:07,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:07,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash 343908, now seen corresponding path program 1 times [2023-11-19 04:12:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129080799] [2023-11-19 04:12:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:07,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129080799] [2023-11-19 04:12:07,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129080799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:07,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:07,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:12:07,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314251474] [2023-11-19 04:12:07,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:07,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:12:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:07,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:12:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:12:07,318 INFO L87 Difference]: Start difference. First operand has 150 states, 72 states have (on average 2.263888888888889) internal successors, (163), 142 states have internal predecessors, (163), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:12:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:07,486 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2023-11-19 04:12:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:12:07,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-19 04:12:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:07,506 INFO L225 Difference]: With dead ends: 150 [2023-11-19 04:12:07,506 INFO L226 Difference]: Without dead ends: 149 [2023-11-19 04:12:07,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:12:07,514 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:07,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-19 04:12:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-19 04:12:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 72 states have (on average 2.111111111111111) internal successors, (152), 141 states have internal predecessors, (152), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:12:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2023-11-19 04:12:07,609 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 3 [2023-11-19 04:12:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:07,609 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2023-11-19 04:12:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:12:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2023-11-19 04:12:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:12:07,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:07,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:12:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:12:07,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:07,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 326485871, now seen corresponding path program 1 times [2023-11-19 04:12:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123795247] [2023-11-19 04:12:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:07,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145242844] [2023-11-19 04:12:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:07,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:07,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:07,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:07,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:12:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:07,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:12:07,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:07,896 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 [2023-11-19 04:12:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:07,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:07,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123795247] [2023-11-19 04:12:07,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145242844] [2023-11-19 04:12:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145242844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:07,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:12:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60504219] [2023-11-19 04:12:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:12:07,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:07,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:12:07,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:07,922 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:12:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:08,090 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2023-11-19 04:12:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:12:08,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-19 04:12:08,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:08,093 INFO L225 Difference]: With dead ends: 148 [2023-11-19 04:12:08,093 INFO L226 Difference]: Without dead ends: 148 [2023-11-19 04:12:08,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:08,096 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:08,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 229 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-19 04:12:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-19 04:12:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 72 states have (on average 2.0972222222222223) internal successors, (151), 140 states have internal predecessors, (151), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:12:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2023-11-19 04:12:08,119 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 5 [2023-11-19 04:12:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:08,120 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 163 transitions. [2023-11-19 04:12:08,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-19 04:12:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 163 transitions. [2023-11-19 04:12:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:12:08,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:08,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:12:08,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:08,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:08,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:08,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:08,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1531127730, now seen corresponding path program 1 times [2023-11-19 04:12:08,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849307465] [2023-11-19 04:12:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:08,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:08,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597334030] [2023-11-19 04:12:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:08,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:08,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:12:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:08,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 04:12:08,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:08,525 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 [2023-11-19 04:12:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:08,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:08,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849307465] [2023-11-19 04:12:08,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597334030] [2023-11-19 04:12:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597334030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:08,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:08,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:12:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578493615] [2023-11-19 04:12:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:12:08,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:08,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:12:08,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:08,559 INFO L87 Difference]: Start difference. First operand 148 states and 163 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:12:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:08,800 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2023-11-19 04:12:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-11-19 04:12:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:08,803 INFO L225 Difference]: With dead ends: 153 [2023-11-19 04:12:08,803 INFO L226 Difference]: Without dead ends: 153 [2023-11-19 04:12:08,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:08,805 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 7 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:08,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 358 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:12:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-19 04:12:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-19 04:12:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 144 states have internal predecessors, (156), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:12:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 168 transitions. [2023-11-19 04:12:08,822 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 168 transitions. Word has length 6 [2023-11-19 04:12:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 168 transitions. [2023-11-19 04:12:08,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-19 04:12:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 168 transitions. [2023-11-19 04:12:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 04:12:08,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:08,825 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:08,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:09,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:09,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:09,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1594514815, now seen corresponding path program 1 times [2023-11-19 04:12:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311669447] [2023-11-19 04:12:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:09,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628745956] [2023-11-19 04:12:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:09,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:09,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:09,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:09,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:12:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:09,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 04:12:09,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:09,462 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 [2023-11-19 04:12:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 04:12:09,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:09,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311669447] [2023-11-19 04:12:09,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628745956] [2023-11-19 04:12:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628745956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:09,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:09,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:12:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455384221] [2023-11-19 04:12:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:12:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:09,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:12:09,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:09,500 INFO L87 Difference]: Start difference. First operand 153 states and 168 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:12:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:09,698 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2023-11-19 04:12:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:09,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2023-11-19 04:12:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:09,701 INFO L225 Difference]: With dead ends: 152 [2023-11-19 04:12:09,701 INFO L226 Difference]: Without dead ends: 152 [2023-11-19 04:12:09,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:09,703 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 7 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:09,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 372 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:12:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-19 04:12:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-19 04:12:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 76 states have (on average 2.039473684210526) internal successors, (155), 143 states have internal predecessors, (155), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:12:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 167 transitions. [2023-11-19 04:12:09,732 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 167 transitions. Word has length 45 [2023-11-19 04:12:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 167 transitions. [2023-11-19 04:12:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 04:12:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 167 transitions. [2023-11-19 04:12:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:12:09,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:09,739 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:09,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:09,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:09,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -147063100, now seen corresponding path program 1 times [2023-11-19 04:12:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336075235] [2023-11-19 04:12:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:10,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:10,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063438820] [2023-11-19 04:12:10,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:10,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:10,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:10,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:10,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:12:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:10,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 04:12:10,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:10,358 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-11-19 04:12:10,401 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 04:12:10,401 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 12 treesize of output 14 [2023-11-19 04:12:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 3 not checked. [2023-11-19 04:12:10,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:12:10,759 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 04:12:10,760 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 12 treesize of output 11 [2023-11-19 04:12:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:12:10,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336075235] [2023-11-19 04:12:10,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063438820] [2023-11-19 04:12:10,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063438820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:12:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194589893] [2023-11-19 04:12:10,841 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:12:10,841 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:12:10,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:12:10,854 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:12:10,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:12:11,321 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 57 for LOIs [2023-11-19 04:12:11,546 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:12:12,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1194589893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:12,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:12:12,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 17 [2023-11-19 04:12:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778100747] [2023-11-19 04:12:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:12:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:12:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-11-19 04:12:12,890 INFO L87 Difference]: Start difference. First operand 152 states and 167 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:12:13,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:13,635 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2023-11-19 04:12:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:13,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2023-11-19 04:12:13,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:13,639 INFO L225 Difference]: With dead ends: 158 [2023-11-19 04:12:13,639 INFO L226 Difference]: Without dead ends: 158 [2023-11-19 04:12:13,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-11-19 04:12:13,641 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:13,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:12:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-19 04:12:13,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-19 04:12:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 81 states have (on average 1.9753086419753085) internal successors, (160), 148 states have internal predecessors, (160), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 04:12:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2023-11-19 04:12:13,651 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 48 [2023-11-19 04:12:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:13,652 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2023-11-19 04:12:13,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:12:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2023-11-19 04:12:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 04:12:13,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:13,654 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:13,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:13,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:13,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash -239604315, now seen corresponding path program 1 times [2023-11-19 04:12:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59483428] [2023-11-19 04:12:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:13,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:13,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887262300] [2023-11-19 04:12:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:13,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:13,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:13,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:13,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:12:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:14,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 04:12:14,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:14,231 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-11-19 04:12:14,253 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 04:12:14,253 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 12 treesize of output 14 [2023-11-19 04:12:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 3 not checked. [2023-11-19 04:12:14,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:12:14,514 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-19 04:12:14,515 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 12 treesize of output 11 [2023-11-19 04:12:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-19 04:12:14,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:14,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59483428] [2023-11-19 04:12:14,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887262300] [2023-11-19 04:12:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887262300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:12:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693184409] [2023-11-19 04:12:14,540 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:12:14,540 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:12:14,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:12:14,541 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:12:14,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:12:16,367 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-11-19 04:12:16,766 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:12:18,465 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2450#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_l4_insert_~item~0#1.base|) 1)))' at error location [2023-11-19 04:12:18,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:12:18,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:12:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2023-11-19 04:12:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131914373] [2023-11-19 04:12:18,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:12:18,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:12:18,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:12:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=447, Unknown=1, NotChecked=42, Total=552 [2023-11-19 04:12:18,468 INFO L87 Difference]: Start difference. First operand 158 states and 174 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:12:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:19,028 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2023-11-19 04:12:19,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:19,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2023-11-19 04:12:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:19,031 INFO L225 Difference]: With dead ends: 156 [2023-11-19 04:12:19,032 INFO L226 Difference]: Without dead ends: 156 [2023-11-19 04:12:19,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 114 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=74, Invalid=529, Unknown=1, NotChecked=46, Total=650 [2023-11-19 04:12:19,034 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 18 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:19,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 658 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 436 Invalid, 0 Unknown, 157 Unchecked, 0.4s Time] [2023-11-19 04:12:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-19 04:12:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-19 04:12:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.9506172839506173) internal successors, (158), 146 states have internal predecessors, (158), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 04:12:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 172 transitions. [2023-11-19 04:12:19,043 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 172 transitions. Word has length 49 [2023-11-19 04:12:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:19,044 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 172 transitions. [2023-11-19 04:12:19,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:12:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 172 transitions. [2023-11-19 04:12:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 04:12:19,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:19,046 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:19,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:19,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:19,267 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -239604314, now seen corresponding path program 1 times [2023-11-19 04:12:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974891390] [2023-11-19 04:12:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:19,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855190725] [2023-11-19 04:12:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:19,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:19,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:12:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:19,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-19 04:12:19,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:19,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-19 04:12:19,803 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-11-19 04:12:19,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:12:19,840 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 [2023-11-19 04:12:19,850 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 04:12:19,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-19 04:12:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 4 not checked. [2023-11-19 04:12:19,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:12:20,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974891390] [2023-11-19 04:12:20,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855190725] [2023-11-19 04:12:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855190725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:12:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [155250590] [2023-11-19 04:12:20,031 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:12:20,031 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:12:20,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:12:20,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:12:20,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:12:21,655 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-11-19 04:12:22,036 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:12:23,800 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2942#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) (+ 8 |ULTIMATE.start_l4_insert_~item~0#1.offset|)) (< (+ 4 |ULTIMATE.start_l4_insert_~item~0#1.offset|) 0)))' at error location [2023-11-19 04:12:23,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:12:23,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:12:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 04:12:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133520020] [2023-11-19 04:12:23,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:12:23,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:12:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:12:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=490, Unknown=1, NotChecked=44, Total=600 [2023-11-19 04:12:23,804 INFO L87 Difference]: Start difference. First operand 156 states and 172 transitions. Second operand has 11 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:12:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:24,754 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2023-11-19 04:12:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:12:24,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-11-19 04:12:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:24,758 INFO L225 Difference]: With dead ends: 168 [2023-11-19 04:12:24,758 INFO L226 Difference]: Without dead ends: 168 [2023-11-19 04:12:24,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=85, Invalid=674, Unknown=1, NotChecked=52, Total=812 [2023-11-19 04:12:24,760 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 14 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:24,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 579 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 700 Invalid, 0 Unknown, 172 Unchecked, 0.7s Time] [2023-11-19 04:12:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-19 04:12:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 163. [2023-11-19 04:12:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 86 states have (on average 1.941860465116279) internal successors, (167), 152 states have internal predecessors, (167), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 04:12:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2023-11-19 04:12:24,772 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 49 [2023-11-19 04:12:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:24,772 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2023-11-19 04:12:24,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 04:12:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2023-11-19 04:12:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:12:24,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:24,775 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:24,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:24,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:24,996 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2023-11-19 04:12:24,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1160573053, now seen corresponding path program 2 times [2023-11-19 04:12:24,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:24,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727561128] [2023-11-19 04:12:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:25,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730405576] [2023-11-19 04:12:25,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:12:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:25,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:25,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:12:25,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 04:12:25,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:12:25,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 04:12:25,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:25,341 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 [2023-11-19 04:12:25,408 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 15 treesize of output 11 [2023-11-19 04:12:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:12:26,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:12:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:12:26,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:12:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727561128] [2023-11-19 04:12:26,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:12:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730405576] [2023-11-19 04:12:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730405576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:12:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2057278175] [2023-11-19 04:12:26,493 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 04:12:26,493 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:12:26,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:12:26,494 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:12:26,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:12:27,984 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-11-19 04:12:28,292 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:12:29,700 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3597#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) (+ 8 |ULTIMATE.start_l4_insert_~item~0#1.offset|)) (< (+ 4 |ULTIMATE.start_l4_insert_~item~0#1.offset|) 0)))' at error location [2023-11-19 04:12:29,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:12:29,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:12:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 04:12:29,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486175203] [2023-11-19 04:12:29,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:12:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:12:29,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:12:29,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:12:29,703 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:12:31,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:34,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:35,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:37,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:37,785 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2023-11-19 04:12:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:12:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 50 [2023-11-19 04:12:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:37,786 INFO L225 Difference]: With dead ends: 10 [2023-11-19 04:12:37,786 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:12:37,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 122 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-19 04:12:37,788 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:37,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2023-11-19 04:12:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:12:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:12:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-19 04:12:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:12:37,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2023-11-19 04:12:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:37,789 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:12:37,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.375) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 04:12:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:12:37,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:12:37,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 70 remaining) [2023-11-19 04:12:37,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 70 remaining) [2023-11-19 04:12:37,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 70 remaining) [2023-11-19 04:12:37,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 70 remaining) [2023-11-19 04:12:37,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 70 remaining) [2023-11-19 04:12:37,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 70 remaining) [2023-11-19 04:12:37,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 70 remaining) [2023-11-19 04:12:37,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 70 remaining) [2023-11-19 04:12:37,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 70 remaining) [2023-11-19 04:12:37,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 70 remaining) [2023-11-19 04:12:37,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 70 remaining) [2023-11-19 04:12:37,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 70 remaining) [2023-11-19 04:12:37,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 70 remaining) [2023-11-19 04:12:37,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 70 remaining) [2023-11-19 04:12:37,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 70 remaining) [2023-11-19 04:12:37,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 70 remaining) [2023-11-19 04:12:37,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 70 remaining) [2023-11-19 04:12:37,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 70 remaining) [2023-11-19 04:12:37,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 70 remaining) [2023-11-19 04:12:37,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 70 remaining) [2023-11-19 04:12:37,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 70 remaining) [2023-11-19 04:12:37,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 70 remaining) [2023-11-19 04:12:37,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 70 remaining) [2023-11-19 04:12:37,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 70 remaining) [2023-11-19 04:12:37,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 70 remaining) [2023-11-19 04:12:37,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 70 remaining) [2023-11-19 04:12:37,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 70 remaining) [2023-11-19 04:12:37,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 70 remaining) [2023-11-19 04:12:37,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 70 remaining) [2023-11-19 04:12:37,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 70 remaining) [2023-11-19 04:12:37,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 70 remaining) [2023-11-19 04:12:37,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 70 remaining) [2023-11-19 04:12:37,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 70 remaining) [2023-11-19 04:12:37,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 70 remaining) [2023-11-19 04:12:37,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 70 remaining) [2023-11-19 04:12:37,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 70 remaining) [2023-11-19 04:12:37,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 70 remaining) [2023-11-19 04:12:37,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 70 remaining) [2023-11-19 04:12:37,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 70 remaining) [2023-11-19 04:12:37,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 70 remaining) [2023-11-19 04:12:37,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 70 remaining) [2023-11-19 04:12:37,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 70 remaining) [2023-11-19 04:12:37,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 70 remaining) [2023-11-19 04:12:37,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 70 remaining) [2023-11-19 04:12:37,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE (25 of 70 remaining) [2023-11-19 04:12:37,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_FREE (24 of 70 remaining) [2023-11-19 04:12:37,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE (23 of 70 remaining) [2023-11-19 04:12:37,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 70 remaining) [2023-11-19 04:12:37,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 70 remaining) [2023-11-19 04:12:37,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (20 of 70 remaining) [2023-11-19 04:12:37,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE (19 of 70 remaining) [2023-11-19 04:12:37,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_FREE (18 of 70 remaining) [2023-11-19 04:12:37,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 70 remaining) [2023-11-19 04:12:37,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 70 remaining) [2023-11-19 04:12:37,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE (15 of 70 remaining) [2023-11-19 04:12:37,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE (14 of 70 remaining) [2023-11-19 04:12:37,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE (13 of 70 remaining) [2023-11-19 04:12:37,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 70 remaining) [2023-11-19 04:12:37,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 70 remaining) [2023-11-19 04:12:37,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE (10 of 70 remaining) [2023-11-19 04:12:37,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE (9 of 70 remaining) [2023-11-19 04:12:37,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_FREE (8 of 70 remaining) [2023-11-19 04:12:37,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 70 remaining) [2023-11-19 04:12:37,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 70 remaining) [2023-11-19 04:12:37,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE (5 of 70 remaining) [2023-11-19 04:12:37,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr65ASSERT_VIOLATIONMEMORY_FREE (4 of 70 remaining) [2023-11-19 04:12:37,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_FREE (3 of 70 remaining) [2023-11-19 04:12:37,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_LEAK (2 of 70 remaining) [2023-11-19 04:12:37,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (1 of 70 remaining) [2023-11-19 04:12:37,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (0 of 70 remaining) [2023-11-19 04:12:37,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:12:38,038 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:38,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:12:38,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:12:38 BoogieIcfgContainer [2023-11-19 04:12:38,048 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:12:38,049 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:12:38,049 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:12:38,049 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:12:38,050 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:06" (3/4) ... [2023-11-19 04:12:38,052 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:12:38,056 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure zalloc_or_die [2023-11-19 04:12:38,086 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2023-11-19 04:12:38,087 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-19 04:12:38,088 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 04:12:38,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 04:12:38,239 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:12:38,240 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:12:38,240 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:12:38,241 INFO L158 Benchmark]: Toolchain (without parser) took 33452.47ms. Allocated memory was 184.5MB in the beginning and 448.8MB in the end (delta: 264.2MB). Free memory was 136.2MB in the beginning and 322.5MB in the end (delta: -186.3MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,241 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 184.5MB. Free memory is still 154.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:12:38,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.73ms. Allocated memory is still 184.5MB. Free memory was 135.9MB in the beginning and 114.3MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.73ms. Allocated memory is still 184.5MB. Free memory was 114.3MB in the beginning and 111.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,243 INFO L158 Benchmark]: Boogie Preprocessor took 57.27ms. Allocated memory is still 184.5MB. Free memory was 111.4MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,244 INFO L158 Benchmark]: RCFGBuilder took 1065.26ms. Allocated memory is still 184.5MB. Free memory was 109.4MB in the beginning and 70.2MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,245 INFO L158 Benchmark]: TraceAbstraction took 31269.94ms. Allocated memory was 184.5MB in the beginning and 448.8MB in the end (delta: 264.2MB). Free memory was 69.5MB in the beginning and 329.8MB in the end (delta: -260.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,245 INFO L158 Benchmark]: Witness Printer took 191.45ms. Allocated memory is still 448.8MB. Free memory was 329.8MB in the beginning and 322.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:12:38,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 184.5MB. Free memory is still 154.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.73ms. Allocated memory is still 184.5MB. Free memory was 135.9MB in the beginning and 114.3MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.73ms. Allocated memory is still 184.5MB. Free memory was 114.3MB in the beginning and 111.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.27ms. Allocated memory is still 184.5MB. Free memory was 111.4MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1065.26ms. Allocated memory is still 184.5MB. Free memory was 109.4MB in the beginning and 70.2MB in the end (delta: 39.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31269.94ms. Allocated memory was 184.5MB in the beginning and 448.8MB in the end (delta: 264.2MB). Free memory was 69.5MB in the beginning and 329.8MB in the end (delta: -260.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 191.45ms. Allocated memory is still 448.8MB. Free memory was 329.8MB in the beginning and 322.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 150 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 31.1s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 10.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 2629 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 329 IncrementalHoareTripleChecker+Unchecked, 1700 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1891 IncrementalHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 929 mSDtfsCounter, 1891 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 602 GetRequests, 475 SyntacticMatches, 31 SemanticMatches, 96 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 255 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 391 ConstructedInterpolants, 25 QuantifiedInterpolants, 1075 SizeOfPredicates, 53 NumberOfNonLiveVariables, 2460 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 612/634 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: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 3, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 2, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 15, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 25, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 2, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 418, DAG_COMPRESSION_RETAINED_NODES: 66, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 70 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 04:12:38,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99b19a75-c371-4b34-9e1c-17f4fe1ef0f1/bin/utaipan-verify-t7M7D8N6sZ/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 Writing output log to file Ultimate.log Result: TRUE