./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 44a86740b4b3d791346dd5ab0675f134d34312247f7633c0f06bf117457d4ce2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:42:09,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:42:09,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:42:10,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:42:10,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:42:10,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:42:10,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:42:10,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:42:10,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:42:10,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:42:10,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:42:10,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:42:10,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:42:10,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:42:10,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:42:10,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:42:10,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:42:10,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:42:10,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:42:10,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:42:10,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:42:10,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:42:10,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:42:10,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:42:10,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:42:10,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:42:10,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:42:10,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:42:10,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:42:10,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:42:10,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:42:10,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:42:10,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:42:10,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:42:10,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:42:10,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:42:10,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:42:10,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:42:10,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:42:10,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:42:10,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:42:10,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:42:10,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:42:10,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:42:10,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:42:10,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:42:10,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:42:10,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:42:10,068 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:42:10,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:42:10,068 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:42:10,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:42:10,068 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:42:10,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:42:10,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:42:10,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:42:10,069 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:42:10,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:42:10,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:42:10,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:42:10,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:42:10,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:42:10,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:42:10,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:42:10,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:42:10,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:42:10,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:42:10,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:42:10,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:42:10,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:42:10,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:42:10,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:42:10,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:42:10,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:42:10,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:42:10,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:42:10,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:42:10,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:42:10,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a86740b4b3d791346dd5ab0675f134d34312247f7633c0f06bf117457d4ce2 [2022-12-14 07:42:10,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:42:10,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:42:10,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:42:10,272 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:42:10,272 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:42:10,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2022-12-14 07:42:12,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:42:13,059 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:42:13,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2022-12-14 07:42:13,066 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/data/31ce9c4bc/e11a75e517d44f5394a4d8f6fa0f8cbe/FLAG25fa66427 [2022-12-14 07:42:13,078 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/data/31ce9c4bc/e11a75e517d44f5394a4d8f6fa0f8cbe [2022-12-14 07:42:13,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:42:13,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:42:13,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:42:13,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:42:13,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:42:13,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65050943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13, skipping insertion in model container [2022-12-14 07:42:13,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:42:13,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:42:13,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,225 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,231 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c[3481,3494] [2022-12-14 07:42:13,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:42:13,244 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:42:13,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,257 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:42:13,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:42:13,263 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c[3481,3494] [2022-12-14 07:42:13,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:42:13,276 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:42:13,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13 WrapperNode [2022-12-14 07:42:13,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:42:13,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:42:13,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:42:13,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:42:13,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,311 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 349 [2022-12-14 07:42:13,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:42:13,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:42:13,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:42:13,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:42:13,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:42:13,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:42:13,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:42:13,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:42:13,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (1/1) ... [2022-12-14 07:42:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:42:13,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:42:13,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:42:13,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:42:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:42:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 07:42:13,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 07:42:13,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 07:42:13,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 07:42:13,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 07:42:13,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:42:13,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:42:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:42:13,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:42:13,398 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:42:13,481 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:42:13,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:42:13,901 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:42:14,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:42:14,269 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 07:42:14,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:42:14 BoogieIcfgContainer [2022-12-14 07:42:14,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:42:14,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:42:14,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:42:14,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:42:14,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:42:13" (1/3) ... [2022-12-14 07:42:14,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31473924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:42:14, skipping insertion in model container [2022-12-14 07:42:14,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:42:13" (2/3) ... [2022-12-14 07:42:14,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31473924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:42:14, skipping insertion in model container [2022-12-14 07:42:14,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:42:14" (3/3) ... [2022-12-14 07:42:14,279 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2022-12-14 07:42:14,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:42:14,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-14 07:42:14,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:42:14,372 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-14 07:42:14,403 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:42:14,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 141 transitions, 306 flow [2022-12-14 07:42:14,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 141 transitions, 306 flow [2022-12-14 07:42:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 141 transitions, 306 flow [2022-12-14 07:42:14,455 INFO L130 PetriNetUnfolder]: 1/138 cut-off events. [2022-12-14 07:42:14,455 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-14 07:42:14,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 1/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2022-12-14 07:42:14,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 378 [2022-12-14 07:42:24,480 INFO L134 LiptonReduction]: Checked pairs total: 730 [2022-12-14 07:42:24,481 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-12-14 07:42:24,486 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2022-12-14 07:42:24,498 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 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) [2022-12-14 07:42:24,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:42:24,515 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;@5ac0d475, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:42:24,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 07:42:24,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 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) [2022-12-14 07:42:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 07:42:24,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:24,520 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 07:42:24,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1362, now seen corresponding path program 1 times [2022-12-14 07:42:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087682692] [2022-12-14 07:42:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:24,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:24,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087682692] [2022-12-14 07:42:24,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087682692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:24,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:24,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 07:42:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847344942] [2022-12-14 07:42:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:42:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:24,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:42:24,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:42:24,622 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 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) [2022-12-14 07:42:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:24,679 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2022-12-14 07:42:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:42:24,681 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 [2022-12-14 07:42:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:24,687 INFO L225 Difference]: With dead ends: 84 [2022-12-14 07:42:24,687 INFO L226 Difference]: Without dead ends: 84 [2022-12-14 07:42:24,688 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 [2022-12-14 07:42:24,690 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:24,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-14 07:42:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-12-14 07:42:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 states have internal predecessors, (164), 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) [2022-12-14 07:42:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2022-12-14 07:42:24,717 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2022-12-14 07:42:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:24,718 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2022-12-14 07:42:24,718 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) [2022-12-14 07:42:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2022-12-14 07:42:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 07:42:24,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:24,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 07:42:24,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:42:24,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:24,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1346248, now seen corresponding path program 1 times [2022-12-14 07:42:24,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:24,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687676424] [2022-12-14 07:42:24,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:24,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:24,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:24,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687676424] [2022-12-14 07:42:24,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687676424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:24,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:42:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192909535] [2022-12-14 07:42:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:42:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:42:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:24,887 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand has 3 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) [2022-12-14 07:42:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:24,928 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2022-12-14 07:42:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:24,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-12-14 07:42:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:24,930 INFO L225 Difference]: With dead ends: 78 [2022-12-14 07:42:24,930 INFO L226 Difference]: Without dead ends: 78 [2022-12-14 07:42:24,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:24,931 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:24,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-14 07:42:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-14 07:42:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 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) [2022-12-14 07:42:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2022-12-14 07:42:24,937 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2022-12-14 07:42:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:24,937 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2022-12-14 07:42:24,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-14 07:42:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2022-12-14 07:42:24,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 07:42:24,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:24,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 07:42:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:42:24,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1346249, now seen corresponding path program 1 times [2022-12-14 07:42:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:24,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179799424] [2022-12-14 07:42:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:25,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:25,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179799424] [2022-12-14 07:42:25,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179799424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:25,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:25,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:42:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131819060] [2022-12-14 07:42:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:25,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:42:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:42:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,034 INFO L87 Difference]: Start difference. First operand 78 states and 153 transitions. Second operand has 3 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) [2022-12-14 07:42:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:25,074 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2022-12-14 07:42:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:25,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-12-14 07:42:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:25,075 INFO L225 Difference]: With dead ends: 72 [2022-12-14 07:42:25,075 INFO L226 Difference]: Without dead ends: 72 [2022-12-14 07:42:25,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,077 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:25,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-12-14 07:42:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-12-14 07:42:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 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) [2022-12-14 07:42:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2022-12-14 07:42:25,083 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2022-12-14 07:42:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:25,083 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2022-12-14 07:42:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-14 07:42:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2022-12-14 07:42:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:42:25,084 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:25,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:42:25,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:42:25,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1293781626, now seen corresponding path program 1 times [2022-12-14 07:42:25,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:25,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834671135] [2022-12-14 07:42:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:25,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:25,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:25,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834671135] [2022-12-14 07:42:25,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834671135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:25,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:25,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:42:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320635065] [2022-12-14 07:42:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:42:25,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:42:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,144 INFO L87 Difference]: Start difference. First operand 72 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:42:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:25,182 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2022-12-14 07:42:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 07:42:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:25,183 INFO L225 Difference]: With dead ends: 66 [2022-12-14 07:42:25,183 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 07:42:25,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,184 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:25,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 07:42:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-12-14 07:42:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 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) [2022-12-14 07:42:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2022-12-14 07:42:25,190 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2022-12-14 07:42:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:25,190 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2022-12-14 07:42:25,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:42:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2022-12-14 07:42:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:42:25,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:25,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:42:25,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:42:25,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1293781627, now seen corresponding path program 1 times [2022-12-14 07:42:25,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:25,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381822738] [2022-12-14 07:42:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:25,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:25,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381822738] [2022-12-14 07:42:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381822738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:25,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:25,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:42:25,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625864828] [2022-12-14 07:42:25,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:25,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:42:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:25,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:42:25,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,244 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:42:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:25,277 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2022-12-14 07:42:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 07:42:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:25,278 INFO L225 Difference]: With dead ends: 60 [2022-12-14 07:42:25,278 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 07:42:25,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:42:25,279 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:25,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 07:42:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-12-14 07:42:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 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) [2022-12-14 07:42:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2022-12-14 07:42:25,284 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2022-12-14 07:42:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:25,284 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2022-12-14 07:42:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:42:25,285 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2022-12-14 07:42:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:42:25,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:25,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:42:25,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2078631448, now seen corresponding path program 1 times [2022-12-14 07:42:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:25,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871741104] [2022-12-14 07:42:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:25,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871741104] [2022-12-14 07:42:25,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871741104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:25,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:25,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:42:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834439842] [2022-12-14 07:42:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:25,350 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-12-14 07:42:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:25,394 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2022-12-14 07:42:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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 [2022-12-14 07:42:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:25,395 INFO L225 Difference]: With dead ends: 52 [2022-12-14 07:42:25,395 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 07:42:25,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:25,396 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:25,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 07:42:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 07:42:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 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) [2022-12-14 07:42:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2022-12-14 07:42:25,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2022-12-14 07:42:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:25,399 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2022-12-14 07:42:25,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2022-12-14 07:42:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2022-12-14 07:42:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:42:25,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:25,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:42:25,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2078631449, now seen corresponding path program 1 times [2022-12-14 07:42:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:25,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944589157] [2022-12-14 07:42:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:25,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944589157] [2022-12-14 07:42:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944589157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:25,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:25,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:42:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521683419] [2022-12-14 07:42:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:42:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:42:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:42:25,499 INFO L87 Difference]: Start difference. First operand 52 states and 100 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) [2022-12-14 07:42:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:25,533 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2022-12-14 07:42:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:42:25,533 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 [2022-12-14 07:42:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:25,534 INFO L225 Difference]: With dead ends: 44 [2022-12-14 07:42:25,534 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:42:25,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:42:25,535 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:25,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:25,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:42:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-14 07:42:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2022-12-14 07:42:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2022-12-14 07:42:25,538 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2022-12-14 07:42:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:25,538 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2022-12-14 07:42:25,538 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) [2022-12-14 07:42:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2022-12-14 07:42:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:25,539 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:25,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:25,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:42:25,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash -811018353, now seen corresponding path program 1 times [2022-12-14 07:42:25,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:25,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607283935] [2022-12-14 07:42:25,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:28,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:28,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607283935] [2022-12-14 07:42:28,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607283935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:28,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:28,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808806442] [2022-12-14 07:42:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:28,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:28,089 INFO L87 Difference]: Start difference. First operand 44 states and 80 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:28,383 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2022-12-14 07:42:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:28,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:28,384 INFO L225 Difference]: With dead ends: 67 [2022-12-14 07:42:28,384 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 07:42:28,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:42:28,385 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:28,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:42:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 07:42:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2022-12-14 07:42:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:42:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2022-12-14 07:42:28,389 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2022-12-14 07:42:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2022-12-14 07:42:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2022-12-14 07:42:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:28,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:28,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:28,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 07:42:28,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 662794483, now seen corresponding path program 2 times [2022-12-14 07:42:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445038119] [2022-12-14 07:42:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:30,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445038119] [2022-12-14 07:42:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445038119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:30,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:30,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210239484] [2022-12-14 07:42:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:30,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:30,030 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:30,270 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2022-12-14 07:42:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:30,271 INFO L225 Difference]: With dead ends: 63 [2022-12-14 07:42:30,272 INFO L226 Difference]: Without dead ends: 44 [2022-12-14 07:42:30,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:42:30,272 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:30,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:42:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-14 07:42:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2022-12-14 07:42:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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) [2022-12-14 07:42:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2022-12-14 07:42:30,274 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2022-12-14 07:42:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:30,275 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-12-14 07:42:30,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2022-12-14 07:42:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:30,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:30,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 07:42:30,275 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash 855328111, now seen corresponding path program 3 times [2022-12-14 07:42:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508449296] [2022-12-14 07:42:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:31,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:31,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508449296] [2022-12-14 07:42:31,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508449296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:31,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:31,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168297521] [2022-12-14 07:42:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:31,633 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:31,875 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-12-14 07:42:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:31,876 INFO L225 Difference]: With dead ends: 51 [2022-12-14 07:42:31,876 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:42:31,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:42:31,877 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:31,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:42:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:42:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-12-14 07:42:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2022-12-14 07:42:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2022-12-14 07:42:31,880 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2022-12-14 07:42:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:31,880 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2022-12-14 07:42:31,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2022-12-14 07:42:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:31,881 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:31,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 07:42:31,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 996050059, now seen corresponding path program 4 times [2022-12-14 07:42:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:31,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207113174] [2022-12-14 07:42:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:33,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:33,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207113174] [2022-12-14 07:42:33,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207113174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:33,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:33,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765092338] [2022-12-14 07:42:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:33,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:33,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:33,173 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:33,412 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-12-14 07:42:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:33,413 INFO L225 Difference]: With dead ends: 37 [2022-12-14 07:42:33,413 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 07:42:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:42:33,413 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:33,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:42:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 07:42:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 07:42:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2022-12-14 07:42:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-12-14 07:42:33,416 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-12-14 07:42:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:33,416 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-12-14 07:42:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-12-14 07:42:33,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:33,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:33,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 07:42:33,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 504708593, now seen corresponding path program 5 times [2022-12-14 07:42:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728839252] [2022-12-14 07:42:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:34,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728839252] [2022-12-14 07:42:34,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728839252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:34,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:34,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:34,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015086195] [2022-12-14 07:42:34,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:34,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:34,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:34,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:34,852 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:35,046 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-14 07:42:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:35,047 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:42:35,047 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 07:42:35,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:42:35,048 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:35,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:42:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 07:42:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 07:42:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-12-14 07:42:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-14 07:42:35,049 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2022-12-14 07:42:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:35,049 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-14 07:42:35,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-14 07:42:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:42:35,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:42:35,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 07:42:35,050 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 07:42:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:42:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1304713169, now seen corresponding path program 6 times [2022-12-14 07:42:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:42:35,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070156407] [2022-12-14 07:42:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:42:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:42:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:42:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:42:36,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:42:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070156407] [2022-12-14 07:42:36,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070156407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:42:36,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:42:36,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 07:42:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457305765] [2022-12-14 07:42:36,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:42:36,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:42:36,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:42:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:42:36,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:42:36,003 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:42:36,123 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-12-14 07:42:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:42:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-14 07:42:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:42:36,124 INFO L225 Difference]: With dead ends: 19 [2022-12-14 07:42:36,124 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 07:42:36,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:42:36,125 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:42:36,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:42:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 07:42:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 07:42:36,125 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) [2022-12-14 07:42:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 07:42:36,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-12-14 07:42:36,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:42:36,126 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 07:42:36,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-14 07:42:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 07:42:36,126 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 07:42:36,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-12-14 07:42:36,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-12-14 07:42:36,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-12-14 07:42:36,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2022-12-14 07:42:36,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2022-12-14 07:42:36,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2022-12-14 07:42:36,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2022-12-14 07:42:36,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2022-12-14 07:42:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 07:42:36,132 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:42:36,134 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 07:42:36,134 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 07:42:36,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:42:36 BasicIcfg [2022-12-14 07:42:36,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 07:42:36,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 07:42:36,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 07:42:36,136 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 07:42:36,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:42:14" (3/4) ... [2022-12-14 07:42:36,139 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 07:42:36,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-14 07:42:36,143 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-14 07:42:36,143 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-14 07:42:36,145 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-12-14 07:42:36,146 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 07:42:36,146 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 07:42:36,146 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 07:42:36,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 07:42:36,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 07:42:36,170 INFO L158 Benchmark]: Toolchain (without parser) took 23088.76ms. Allocated memory was 119.5MB in the beginning and 436.2MB in the end (delta: 316.7MB). Free memory was 87.7MB in the beginning and 254.4MB in the end (delta: -166.7MB). Peak memory consumption was 152.0MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,171 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:42:36,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.71ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 75.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.62ms. Allocated memory is still 119.5MB. Free memory was 75.4MB in the beginning and 72.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,172 INFO L158 Benchmark]: Boogie Preprocessor took 23.47ms. Allocated memory is still 119.5MB. Free memory was 72.5MB in the beginning and 70.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,172 INFO L158 Benchmark]: RCFGBuilder took 935.48ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 70.4MB in the beginning and 73.2MB in the end (delta: -2.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,172 INFO L158 Benchmark]: TraceAbstraction took 21862.38ms. Allocated memory was 144.7MB in the beginning and 436.2MB in the end (delta: 291.5MB). Free memory was 73.2MB in the beginning and 257.6MB in the end (delta: -184.3MB). Peak memory consumption was 107.3MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,172 INFO L158 Benchmark]: Witness Printer took 33.87ms. Allocated memory is still 436.2MB. Free memory was 257.6MB in the beginning and 254.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 07:42:36,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.71ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 75.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.62ms. Allocated memory is still 119.5MB. Free memory was 75.4MB in the beginning and 72.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.47ms. Allocated memory is still 119.5MB. Free memory was 72.5MB in the beginning and 70.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 935.48ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 70.4MB in the beginning and 73.2MB in the end (delta: -2.8MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. * TraceAbstraction took 21862.38ms. Allocated memory was 144.7MB in the beginning and 436.2MB in the end (delta: 291.5MB). Free memory was 73.2MB in the beginning and 257.6MB in the end (delta: -184.3MB). Peak memory consumption was 107.3MB. Max. memory is 16.1GB. * Witness Printer took 33.87ms. Allocated memory is still 436.2MB. Free memory was 257.6MB in the beginning and 254.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 150 PlacesBefore, 43 PlacesAfterwards, 141 TransitionsBefore, 33 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 8 FixpointIterations, 101 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 133 TotalNumberOfCompositions, 730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 730, independent: 730, independent conditional: 0, independent unconditional: 730, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 271, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 271, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 730, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 271, unknown conditional: 0, unknown unconditional: 271] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: -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: 100]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: 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 7 procedures, 156 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 21.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 296 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 296 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 537 IncrementalHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 0 mSDtfsCounter, 537 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 07:42:36,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99ca3651-60f2-4def-905e-0d5578fa2f25/bin/utaipan-gh47qXpMRh/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