./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/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_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/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_af3b29b2-4261-4bfb-9c3f-7544da86031f/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 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:40,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:40,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:12:40,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:40,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:40,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:40,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:40,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:40,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:40,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:40,599 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:40,600 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:40,601 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:40,601 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:40,602 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:40,603 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:40,603 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:40,604 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:40,605 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:40,605 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:40,606 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:40,607 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:40,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:12:40,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:12:40,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:40,610 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:12:40,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:40,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:12:40,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:40,612 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:12:40,613 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:12:40,613 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:12:40,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:40,614 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:12:40,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:12:40,615 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:12:40,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:40,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:40,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:40,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:40,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:40,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:40,619 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:40,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:40,620 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:40,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:40,621 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_af3b29b2-4261-4bfb-9c3f-7544da86031f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1118c32f43b2d6844c8e6b0e5b4fae8199d058f7b991e3c8d975cf675dc5221a [2023-11-19 05:12:41,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:41,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:41,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:41,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:41,059 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:41,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-wmm/safe036.i [2023-11-19 05:12:44,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:12:44,961 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:12:44,962 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/sv-benchmarks/c/pthread-wmm/safe036.i [2023-11-19 05:12:44,982 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/data/ada2db462/0fdc1bd69cf348d3a01c525189d871f9/FLAG784411929 [2023-11-19 05:12:45,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/data/ada2db462/0fdc1bd69cf348d3a01c525189d871f9 [2023-11-19 05:12:45,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:12:45,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:12:45,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:45,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:12:45,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:12:45,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb3f5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45, skipping insertion in model container [2023-11-19 05:12:45,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:12:45,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:45,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:12:45,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:45,749 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:12:45,749 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:12:45,757 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:12:45,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45 WrapperNode [2023-11-19 05:12:45,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:45,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:45,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:12:45,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:12:45,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,839 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-19 05:12:45,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:45,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:12:45,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:12:45,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:12:45,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,893 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:12:45,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:12:45,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:12:45,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:12:45,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (1/1) ... [2023-11-19 05:12:45,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:45,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:12:45,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:12:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:12:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:12:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:12:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:12:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:12:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 05:12:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 05:12:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 05:12:46,009 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 05:12:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:12:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:12:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:12:46,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:12:46,012 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:12:46,225 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:12:46,228 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:12:46,463 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:12:46,473 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:12:46,476 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:12:46,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:46 BoogieIcfgContainer [2023-11-19 05:12:46,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:12:46,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:12:46,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:12:46,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:12:46,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:12:45" (1/3) ... [2023-11-19 05:12:46,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e752c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:46, skipping insertion in model container [2023-11-19 05:12:46,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:45" (2/3) ... [2023-11-19 05:12:46,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e752c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:46, skipping insertion in model container [2023-11-19 05:12:46,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:46" (3/3) ... [2023-11-19 05:12:46,496 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2023-11-19 05:12:46,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:12:46,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:12:46,522 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:12:46,592 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:12:46,633 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:12:46,650 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 89 transitions, 186 flow [2023-11-19 05:12:46,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 89 transitions, 186 flow [2023-11-19 05:12:46,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 89 transitions, 186 flow [2023-11-19 05:12:46,715 INFO L124 PetriNetUnfolderBase]: 3/87 cut-off events. [2023-11-19 05:12:46,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:12:46,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 87 events. 3/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-11-19 05:12:46,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 1520 [2023-11-19 05:12:50,158 INFO L134 LiptonReduction]: Checked pairs total: 2041 [2023-11-19 05:12:50,158 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-19 05:12:50,168 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 22 transitions, 52 flow [2023-11-19 05:12:50,211 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 100 states, 94 states have (on average 2.4680851063829787) internal successors, (232), 99 states have internal predecessors, (232), 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 05:12:50,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:12:50,267 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;@37e7127f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:12:50,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 05:12:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 94 states have (on average 2.4680851063829787) internal successors, (232), 99 states have internal predecessors, (232), 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 05:12:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-19 05:12:50,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:50,277 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-19 05:12:50,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:50,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 335, now seen corresponding path program 1 times [2023-11-19 05:12:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841310909] [2023-11-19 05:12:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:50,473 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 05:12:50,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841310909] [2023-11-19 05:12:50,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841310909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:50,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:50,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 05:12:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963017894] [2023-11-19 05:12:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:50,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:12:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:12:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:12:50,525 INFO L87 Difference]: Start difference. First operand has 100 states, 94 states have (on average 2.4680851063829787) internal successors, (232), 99 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 05:12:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:50,570 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2023-11-19 05:12:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:12:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2023-11-19 05:12:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:50,584 INFO L225 Difference]: With dead ends: 90 [2023-11-19 05:12:50,585 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 05:12:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 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 05:12:50,589 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:50,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 05:12:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-19 05:12:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 2.272727272727273) internal successors, (200), 89 states have internal predecessors, (200), 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 05:12:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 200 transitions. [2023-11-19 05:12:50,642 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 200 transitions. Word has length 1 [2023-11-19 05:12:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:50,642 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 200 transitions. [2023-11-19 05:12:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 05:12:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 200 transitions. [2023-11-19 05:12:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:12:50,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:50,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:12:50,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:50,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2034431044, now seen corresponding path program 1 times [2023-11-19 05:12:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:50,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123704395] [2023-11-19 05:12:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:51,287 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 05:12:51,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123704395] [2023-11-19 05:12:51,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123704395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:51,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:51,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:12:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555117694] [2023-11-19 05:12:51,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:51,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:51,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:51,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:51,292 INFO L87 Difference]: Start difference. First operand 90 states and 200 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:12:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:51,351 INFO L93 Difference]: Finished difference Result 74 states and 160 transitions. [2023-11-19 05:12:51,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 05:12:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:51,354 INFO L225 Difference]: With dead ends: 74 [2023-11-19 05:12:51,355 INFO L226 Difference]: Without dead ends: 74 [2023-11-19 05:12:51,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:51,357 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-19 05:12:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-19 05:12:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.191780821917808) internal successors, (160), 73 states have internal predecessors, (160), 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 05:12:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2023-11-19 05:12:51,369 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 7 [2023-11-19 05:12:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2023-11-19 05:12:51,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 05:12:51,371 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2023-11-19 05:12:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:12:51,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:51,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:51,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:12:51,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:51,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2034431024, now seen corresponding path program 1 times [2023-11-19 05:12:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692020408] [2023-11-19 05:12:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:51,501 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 05:12:51,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692020408] [2023-11-19 05:12:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692020408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:51,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:12:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090385828] [2023-11-19 05:12:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:51,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:51,505 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 05:12:51,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:51,536 INFO L93 Difference]: Finished difference Result 47 states and 79 transitions. [2023-11-19 05:12:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-19 05:12:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:51,538 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:12:51,539 INFO L226 Difference]: Without dead ends: 47 [2023-11-19 05:12:51,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:51,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:51,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-19 05:12:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-19 05:12:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 46 states have internal predecessors, (79), 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 05:12:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2023-11-19 05:12:51,560 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2023-11-19 05:12:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:51,561 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2023-11-19 05:12:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 05:12:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2023-11-19 05:12:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:12:51,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:51,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:51,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:12:51,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 993645482, now seen corresponding path program 1 times [2023-11-19 05:12:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677332574] [2023-11-19 05:12:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:51,845 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 05:12:51,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677332574] [2023-11-19 05:12:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677332574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:51,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212565298] [2023-11-19 05:12:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:51,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:51,849 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:12:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:51,904 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2023-11-19 05:12:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:12:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:51,906 INFO L225 Difference]: With dead ends: 29 [2023-11-19 05:12:51,906 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 05:12:51,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:12:51,914 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:51,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 05:12:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 05:12:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 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 05:12:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2023-11-19 05:12:51,925 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2023-11-19 05:12:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:51,927 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2023-11-19 05:12:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:12:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2023-11-19 05:12:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:12:51,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:51,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:12:51,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:51,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -831289181, now seen corresponding path program 1 times [2023-11-19 05:12:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114711397] [2023-11-19 05:12:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:52,203 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 05:12:52,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114711397] [2023-11-19 05:12:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114711397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601060328] [2023-11-19 05:12:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:52,212 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 05:12:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:52,318 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-11-19 05:12:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-11-19 05:12:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:52,324 INFO L225 Difference]: With dead ends: 37 [2023-11-19 05:12:52,324 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:12:52,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:12:52,326 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:12:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:12:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-11-19 05:12:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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 05:12:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-19 05:12:52,345 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2023-11-19 05:12:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:52,346 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 05:12:52,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 05:12:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-19 05:12:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:12:52,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:52,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:12:52,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-19 05:12:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 395758881, now seen corresponding path program 2 times [2023-11-19 05:12:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118142441] [2023-11-19 05:12:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:52,572 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 05:12:52,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118142441] [2023-11-19 05:12:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118142441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:12:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468901677] [2023-11-19 05:12:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:12:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:12:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:52,584 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 05:12:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:52,650 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2023-11-19 05:12:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:12:52,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-11-19 05:12:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:52,652 INFO L225 Difference]: With dead ends: 20 [2023-11-19 05:12:52,653 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:12:52,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:12:52,656 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:52,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:12:52,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:12:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:12:52,659 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 05:12:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:12:52,659 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-11-19 05:12:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:52,660 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:12:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 05:12:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:12:52,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:12:52,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-19 05:12:52,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-19 05:12:52,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-19 05:12:52,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-19 05:12:52,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-19 05:12:52,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-19 05:12:52,666 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-19 05:12:52,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-19 05:12:52,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:12:52,672 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-11-19 05:12:52,675 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:12:52,675 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:12:52,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:12:52 BasicIcfg [2023-11-19 05:12:52,680 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:12:52,680 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:12:52,681 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:12:52,681 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:12:52,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:46" (3/4) ... [2023-11-19 05:12:52,684 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:12:52,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 05:12:52,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 05:12:52,697 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 05:12:52,697 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:12:52,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 05:12:52,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:12:52,810 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:12:52,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:12:52,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:12:52,812 INFO L158 Benchmark]: Toolchain (without parser) took 7802.04ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 154.8MB in the beginning and 130.1MB in the end (delta: 24.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,812 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 67.0MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:12:52,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.80ms. Allocated memory is still 201.3MB. Free memory was 154.8MB in the beginning and 134.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.91ms. Allocated memory is still 201.3MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,814 INFO L158 Benchmark]: Boogie Preprocessor took 61.25ms. Allocated memory is still 201.3MB. Free memory was 132.6MB in the beginning and 131.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,814 INFO L158 Benchmark]: RCFGBuilder took 577.26ms. Allocated memory is still 201.3MB. Free memory was 131.0MB in the beginning and 117.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,815 INFO L158 Benchmark]: TraceAbstraction took 6196.31ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 117.1MB in the beginning and 134.3MB in the end (delta: -17.3MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,815 INFO L158 Benchmark]: Witness Printer took 130.62ms. Allocated memory is still 249.6MB. Free memory was 134.3MB in the beginning and 130.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:12:52,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 67.0MB in the beginning and 67.0MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.80ms. Allocated memory is still 201.3MB. Free memory was 154.8MB in the beginning and 134.7MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.91ms. Allocated memory is still 201.3MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.25ms. Allocated memory is still 201.3MB. Free memory was 132.6MB in the beginning and 131.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.26ms. Allocated memory is still 201.3MB. Free memory was 131.0MB in the beginning and 117.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6196.31ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 117.1MB in the beginning and 134.3MB in the end (delta: -17.3MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Witness Printer took 130.62ms. Allocated memory is still 249.6MB. Free memory was 134.3MB in the beginning and 130.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 93 PlacesBefore, 28 PlacesAfterwards, 89 TransitionsBefore, 22 TransitionsAfterwards, 1520 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 98 TotalNumberOfCompositions, 2041 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1516, independent: 1458, independent conditional: 0, independent unconditional: 1458, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1066, independent: 1047, independent conditional: 0, independent unconditional: 1047, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1066, independent: 1044, independent conditional: 0, independent unconditional: 1044, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, independent: 16, independent conditional: 0, independent unconditional: 16, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1516, independent: 411, independent conditional: 0, independent unconditional: 411, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 1066, unknown conditional: 0, unknown unconditional: 1066] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 762]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 202 IncrementalHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 227 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 05:12:52,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af3b29b2-4261-4bfb-9c3f-7544da86031f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE