./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strchr_short.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strchr_short.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS --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 64bit --witnessprinter.graph.data.programhash b9f420c703006a20f84c0f072fc483abdc031419ba97e1947a58423e06686a36 --- 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-8393723 [2022-11-19 06:42:50,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:42:50,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:42:51,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:42:51,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:42:51,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:42:51,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:42:51,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:42:51,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:42:51,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:42:51,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:42:51,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:42:51,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:42:51,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:42:51,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:42:51,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:42:51,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:42:51,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:42:51,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:42:51,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:42:51,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:42:51,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:42:51,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:42:51,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:42:51,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:42:51,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:42:51,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:42:51,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:42:51,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:42:51,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:42:51,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:42:51,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:42:51,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:42:51,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:42:51,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:42:51,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:42:51,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:42:51,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:42:51,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:42:51,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:42:51,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:42:51,104 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-19 06:42:51,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:42:51,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:42:51,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:42:51,151 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:42:51,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:42:51,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:42:51,153 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:42:51,153 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:42:51,153 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:42:51,153 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:42:51,154 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:42:51,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:42:51,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:42:51,155 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:42:51,156 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:42:51,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:42:51,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:42:51,157 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:42:51,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:42:51,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:42:51,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:42:51,160 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:42:51,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:42:51,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:42:51,160 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:42:51,161 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:42:51,161 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:42:51,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:42:51,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:42:51,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:42:51,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:42:51,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:42:51,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:51,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:42:51,164 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:42:51,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:42:51,164 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:42:51,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:42:51,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:42:51,165 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_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9f420c703006a20f84c0f072fc483abdc031419ba97e1947a58423e06686a36 [2022-11-19 06:42:51,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:42:51,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:42:51,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:42:51,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:42:51,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:42:51,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-dietlibc/strchr_short.i [2022-11-19 06:42:51,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/data/aefd117b3/ea1f048bf0684db5b3b04a57d07d1390/FLAG665e9f3d9 [2022-11-19 06:42:52,284 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:42:52,284 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/sv-benchmarks/c/termination-dietlibc/strchr_short.i [2022-11-19 06:42:52,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/data/aefd117b3/ea1f048bf0684db5b3b04a57d07d1390/FLAG665e9f3d9 [2022-11-19 06:42:52,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/data/aefd117b3/ea1f048bf0684db5b3b04a57d07d1390 [2022-11-19 06:42:52,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:42:52,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:42:52,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:52,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:42:52,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:42:52,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:52" (1/1) ... [2022-11-19 06:42:52,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2999f526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:52, skipping insertion in model container [2022-11-19 06:42:52,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:42:52" (1/1) ... [2022-11-19 06:42:52,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:42:52,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:42:53,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:53,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:42:53,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:42:53,210 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:42:53,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53 WrapperNode [2022-11-19 06:42:53,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:42:53,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:53,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:42:53,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:42:53,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,265 INFO L138 Inliner]: procedures = 113, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2022-11-19 06:42:53,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:42:53,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:42:53,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:42:53,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:42:53,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:42:53,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:42:53,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:42:53,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:42:53,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (1/1) ... [2022-11-19 06:42:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:42:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:53,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:42:53,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:42:53,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:42:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:42:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:42:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:42:53,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:42:53,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:42:53,488 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:42:53,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:42:53,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:42:53,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:42:53,743 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:42:53,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:53 BoogieIcfgContainer [2022-11-19 06:42:53,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:42:53,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:42:53,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:42:53,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:42:53,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:42:52" (1/3) ... [2022-11-19 06:42:53,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db8224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:53, skipping insertion in model container [2022-11-19 06:42:53,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:42:53" (2/3) ... [2022-11-19 06:42:53,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73db8224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:42:53, skipping insertion in model container [2022-11-19 06:42:53,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:53" (3/3) ... [2022-11-19 06:42:53,771 INFO L112 eAbstractionObserver]: Analyzing ICFG strchr_short.i [2022-11-19 06:42:53,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:42:53,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-19 06:42:53,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:42:53,899 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;@128932dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:42:53,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-19 06:42:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 2.0) internal successors, (22), 18 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) [2022-11-19 06:42:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:42:53,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:53,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:42:53,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:53,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash 75157, now seen corresponding path program 1 times [2022-11-19 06:42:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:53,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672889651] [2022-11-19 06:42:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:54,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:54,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672889651] [2022-11-19 06:42:54,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672889651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:54,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:54,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:42:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88458241] [2022-11-19 06:42:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:54,182 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 2.0) internal successors, (22), 18 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) 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) [2022-11-19 06:42:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:54,269 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-19 06:42:54,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:54,274 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 [2022-11-19 06:42:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:54,282 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:42:54,282 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:42:54,284 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 [2022-11-19 06:42:54,291 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:54,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:42:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:42:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:42:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:54,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-19 06:42:54,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2022-11-19 06:42:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:54,327 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-19 06:42:54,327 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) [2022-11-19 06:42:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-19 06:42:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:42:54,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:54,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:42:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:42:54,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:54,334 INFO L85 PathProgramCache]: Analyzing trace with hash 75184, now seen corresponding path program 1 times [2022-11-19 06:42:54,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:54,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465384298] [2022-11-19 06:42:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:54,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:54,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:54,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465384298] [2022-11-19 06:42:54,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465384298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:54,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:54,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:42:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659968276] [2022-11-19 06:42:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:54,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:54,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:54,527 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-19 06:42:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:54,562 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-19 06:42:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:54,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2022-11-19 06:42:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:54,564 INFO L225 Difference]: With dead ends: 17 [2022-11-19 06:42:54,564 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 06:42:54,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:54,566 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 06:42:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 06:42:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-11-19 06:42:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-11-19 06:42:54,570 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2022-11-19 06:42:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:54,570 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-11-19 06:42:54,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2022-11-19 06:42:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-19 06:42:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:42:54,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:54,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:42:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:42:54,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash 75185, now seen corresponding path program 1 times [2022-11-19 06:42:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:54,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914301262] [2022-11-19 06:42:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:54,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914301262] [2022-11-19 06:42:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914301262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:54,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:54,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:42:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891141918] [2022-11-19 06:42:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:54,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:54,878 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 06:42:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:54,912 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-19 06:42:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2022-11-19 06:42:54,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:54,914 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:42:54,915 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 06:42:54,915 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 [2022-11-19 06:42:54,916 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:54,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 06:42:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 06:42:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-11-19 06:42:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-19 06:42:54,921 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 3 [2022-11-19 06:42:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:54,921 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-19 06:42:54,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-11-19 06:42:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-19 06:42:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:42:54,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:54,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:42:54,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:42:54,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash 72289913, now seen corresponding path program 1 times [2022-11-19 06:42:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:54,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622126617] [2022-11-19 06:42:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:54,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:55,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622126617] [2022-11-19 06:42:55,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622126617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:55,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:55,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:42:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032919763] [2022-11-19 06:42:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:42:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:55,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:42:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:55,044 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-19 06:42:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:55,102 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-19 06:42:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:42:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-11-19 06:42:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:55,103 INFO L225 Difference]: With dead ends: 14 [2022-11-19 06:42:55,103 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:42:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:42:55,105 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:42:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:42:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 06:42:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-19 06:42:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-19 06:42:55,108 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 5 [2022-11-19 06:42:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:55,109 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-19 06:42:55,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-11-19 06:42:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-19 06:42:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:42:55,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:55,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:42:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:42:55,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 72289914, now seen corresponding path program 1 times [2022-11-19 06:42:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:55,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358747081] [2022-11-19 06:42:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:55,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:55,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:55,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358747081] [2022-11-19 06:42:55,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358747081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:55,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:55,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:42:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237225097] [2022-11-19 06:42:55,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:55,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:55,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:55,370 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:55,436 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-19 06:42:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:42:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:55,440 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:42:55,440 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 06:42:55,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:42:55,450 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:55,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 06:42:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2022-11-19 06:42:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-11-19 06:42:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-19 06:42:55,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 5 [2022-11-19 06:42:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:55,455 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-19 06:42:55,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:42:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-19 06:42:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:42:55,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:55,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:42:55,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 280955689, now seen corresponding path program 1 times [2022-11-19 06:42:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:55,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911370781] [2022-11-19 06:42:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:55,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:55,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911370781] [2022-11-19 06:42:55,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911370781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:42:55,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:42:55,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:42:55,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198762632] [2022-11-19 06:42:55,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:42:55,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:42:55,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:42:55,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:55,627 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-19 06:42:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:42:55,660 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-19 06:42:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:42:55,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-19 06:42:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:42:55,661 INFO L225 Difference]: With dead ends: 17 [2022-11-19 06:42:55,661 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:42:55,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:42:55,663 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:42:55,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:42:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:42:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 06:42:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-11-19 06:42:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-19 06:42:55,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2022-11-19 06:42:55,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:42:55,667 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-19 06:42:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-19 06:42:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-19 06:42:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:42:55,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:42:55,668 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:42:55,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:42:55,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:42:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:42:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash 121173837, now seen corresponding path program 1 times [2022-11-19 06:42:55,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:42:55,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644173760] [2022-11-19 06:42:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:55,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:42:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:56,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:42:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644173760] [2022-11-19 06:42:56,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644173760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:42:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421092620] [2022-11-19 06:42:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:42:56,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:42:56,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:42:56,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:42:56,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:42:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:42:56,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 06:42:56,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:42:56,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 06:42:56,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:42:56,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-19 06:42:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:56,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:56,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-11-19 06:42:56,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-19 06:42:56,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2022-11-19 06:42:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:56,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421092620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:56,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1037292991] [2022-11-19 06:42:57,009 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:42:57,009 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:42:57,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:42:57,019 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:42:57,020 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:42:57,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:42:57,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 06:42:57,892 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:42:59,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '317#(and (<= 0 (+ |ULTIMATE.start_strchr_~c#1| 2147483648)) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_strchr_#in~t#1.base|) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.offset|) (<= |ULTIMATE.start_strchr_#in~t#1.offset| 0) (<= 0 |ULTIMATE.start_main_~in~0#1.offset|) (<= 0 |ULTIMATE.start_strchr_#in~t#1.offset|) (<= 0 (+ |ULTIMATE.start_strchr_#in~c#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~the_int~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~in~0#1.base|) (<= |ULTIMATE.start_strchr_~c#1| 2147483647) (<= |ULTIMATE.start_main_~the_int~0#1| 2147483647) (<= |ULTIMATE.start_main_~in~0#1.offset| 0) (<= 1 |ULTIMATE.start_strchr_~t#1.offset|) (not (<= (+ |ULTIMATE.start_strchr_~t#1.offset| 1) (select |#length| |ULTIMATE.start_strchr_~t#1.base|))) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_strchr_#in~c#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 0 |ULTIMATE.start_strchr_~t#1.base|) (<= 1 |ULTIMATE.start_main_~in_len~0#1|))' at error location [2022-11-19 06:42:59,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:42:59,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:42:59,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2022-11-19 06:42:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121889076] [2022-11-19 06:42:59,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:59,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:42:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:59,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:42:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-19 06:42:59,919 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2022-11-19 06:43:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:00,168 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 06:43:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:43:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 06:43:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:00,169 INFO L225 Difference]: With dead ends: 19 [2022-11-19 06:43:00,169 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 06:43:00,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:43:00,170 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:00,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-19 06:43:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 06:43:00,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-11-19 06:43:00,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 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) [2022-11-19 06:43:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-19 06:43:00,174 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2022-11-19 06:43:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:00,174 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-19 06:43:00,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2022-11-19 06:43:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-19 06:43:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:43:00,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:00,175 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-19 06:43:00,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:00,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-19 06:43:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1169253798, now seen corresponding path program 2 times [2022-11-19 06:43:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889449128] [2022-11-19 06:43:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:43:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:43:00,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:43:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889449128] [2022-11-19 06:43:00,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889449128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:43:00,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815258382] [2022-11-19 06:43:00,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:43:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:00,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:43:00,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:43:00,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:43:00,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:43:00,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:43:00,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-19 06:43:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:43:00,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:43:01,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-19 06:43:01,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:43:01,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-19 06:43:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:43:01,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:43:01,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2022-11-19 06:43:01,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-19 06:43:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:43:01,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815258382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:43:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [54645214] [2022-11-19 06:43:01,646 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:43:01,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:43:01,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:43:01,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:43:01,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:43:01,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-19 06:43:01,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 06:43:01,936 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:43:03,215 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '469#(and (<= 0 (+ |ULTIMATE.start_strchr_~c#1| 2147483648)) (<= 0 |ULTIMATE.start_strchr_#in~t#1.base|) (<= |ULTIMATE.start_strchr_#in~t#1.offset| 0) (<= 0 |ULTIMATE.start_main_~in~0#1.offset|) (<= 0 |ULTIMATE.start_strchr_#in~t#1.offset|) (<= 0 (+ |ULTIMATE.start_strchr_#in~c#1| 2147483648)) (<= |ULTIMATE.start_main_~in_len~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~the_int~0#1| 2147483648)) (< (select |#length| |ULTIMATE.start_strchr_~t#1.base|) (+ |ULTIMATE.start_strchr_~t#1.offset| 1)) (= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 0 |ULTIMATE.start_main_~in~0#1.base|) (<= |ULTIMATE.start_strchr_~c#1| 2147483647) (<= |ULTIMATE.start_main_~the_int~0#1| 2147483647) (<= |ULTIMATE.start_main_~in~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= 0 |ULTIMATE.start_strchr_~t#1.offset|) (<= |ULTIMATE.start_strchr_#in~c#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_strchr_~t#1.base|) (<= 1 |ULTIMATE.start_main_~in_len~0#1|) (= |#NULL.base| 0))' at error location [2022-11-19 06:43:03,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:43:03,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:43:03,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-19 06:43:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479383430] [2022-11-19 06:43:03,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:43:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 06:43:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:43:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 06:43:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:43:03,218 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-11-19 06:43:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:03,646 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-19 06:43:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:43:03,647 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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 15 [2022-11-19 06:43:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:03,647 INFO L225 Difference]: With dead ends: 15 [2022-11-19 06:43:03,647 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:43:03,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:43:03,648 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:03,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-11-19 06:43:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:43:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:43:03,649 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) [2022-11-19 06:43:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:43:03,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-19 06:43:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:03,650 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:43:03,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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) [2022-11-19 06:43:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:43:03,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:43:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2022-11-19 06:43:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2022-11-19 06:43:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2022-11-19 06:43:03,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2022-11-19 06:43:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2022-11-19 06:43:03,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2022-11-19 06:43:03,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-11-19 06:43:03,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:03,858 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:43:03,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:43:03,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:43:03 BoogieIcfgContainer [2022-11-19 06:43:03,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:43:03,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:43:03,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:43:03,864 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:43:03,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:42:53" (3/4) ... [2022-11-19 06:43:03,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:43:03,875 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-19 06:43:03,875 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 06:43:03,875 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:43:03,876 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:43:03,909 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:43:03,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:43:03,910 INFO L158 Benchmark]: Toolchain (without parser) took 11338.89ms. Allocated memory was 102.8MB in the beginning and 195.0MB in the end (delta: 92.3MB). Free memory was 71.7MB in the beginning and 100.7MB in the end (delta: -29.0MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,910 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 59.1MB in the end (delta: 102.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:43:03,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.51ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 72.8MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.18ms. Allocated memory is still 102.8MB. Free memory was 72.8MB in the beginning and 71.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,911 INFO L158 Benchmark]: Boogie Preprocessor took 54.78ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 69.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:43:03,911 INFO L158 Benchmark]: RCFGBuilder took 423.11ms. Allocated memory is still 102.8MB. Free memory was 69.6MB in the beginning and 57.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,912 INFO L158 Benchmark]: TraceAbstraction took 10099.12ms. Allocated memory was 102.8MB in the beginning and 195.0MB in the end (delta: 92.3MB). Free memory was 57.0MB in the beginning and 103.2MB in the end (delta: -46.2MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,913 INFO L158 Benchmark]: Witness Printer took 45.78ms. Allocated memory is still 195.0MB. Free memory was 103.2MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:43:03,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory was 59.2MB in the beginning and 59.1MB in the end (delta: 102.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.51ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 72.8MB in the end (delta: -1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.18ms. Allocated memory is still 102.8MB. Free memory was 72.8MB in the beginning and 71.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.78ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 69.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 423.11ms. Allocated memory is still 102.8MB. Free memory was 69.6MB in the beginning and 57.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10099.12ms. Allocated memory was 102.8MB in the beginning and 195.0MB in the end (delta: 92.3MB). Free memory was 57.0MB in the beginning and 103.2MB in the end (delta: -46.2MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. * Witness Printer took 45.78ms. Allocated memory is still 195.0MB. Free memory was 103.2MB in the beginning and 100.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 514]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 72 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 38, 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, 8 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 91 ConstructedInterpolants, 20 QuantifiedInterpolants, 1505 SizeOfPredicates, 20 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/33 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 06:43:03,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76dac580-d2e6-4d64-af0e-628c8cbc7a40/bin/utaipan-I9t0OCRTmS/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