./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/structure_assignment.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/structure_assignment.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f8bc3539aa5cc395c69791b45bb86492b18d385db9d41324b7c9625658a9e74 --- 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-4e7fbc6 [2022-11-23 14:10:03,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:10:03,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:10:03,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:10:03,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:10:03,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:10:03,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:10:03,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:10:03,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:10:03,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:10:03,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:10:03,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:10:03,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:10:03,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:10:03,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:10:03,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:10:03,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:10:03,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:10:03,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:10:03,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:10:03,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:10:03,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:10:03,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:10:03,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:10:03,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:10:03,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:10:03,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:10:03,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:10:03,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:10:03,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:10:03,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:10:03,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:10:03,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:10:03,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:10:03,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:10:03,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:10:03,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:10:03,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:10:03,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:10:03,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:10:03,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:10:03,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:10:03,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:10:03,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:10:03,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:10:03,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:10:03,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:10:03,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:10:03,226 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:10:03,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:10:03,226 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:10:03,227 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:10:03,228 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:10:03,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:10:03,229 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:10:03,229 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:10:03,229 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:10:03,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:10:03,230 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:10:03,230 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:10:03,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:10:03,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:10:03,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:10:03,232 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:10:03,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:10:03,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:10:03,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:10:03,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:10:03,234 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:10:03,234 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:10:03,235 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:10:03,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:10:03,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:10:03,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:10:03,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:10:03,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:10:03,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:10:03,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:10:03,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:10:03,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:10:03,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:10:03,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:10:03,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:10:03,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:10:03,239 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_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f8bc3539aa5cc395c69791b45bb86492b18d385db9d41324b7c9625658a9e74 [2022-11-23 14:10:03,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:10:03,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:10:03,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:10:03,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:10:03,547 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:10:03,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-regression/structure_assignment.i [2022-11-23 14:10:06,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:10:06,753 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:10:06,753 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/sv-benchmarks/c/ldv-regression/structure_assignment.i [2022-11-23 14:10:06,760 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/data/7c9c56e42/6d17029d913e4c7994eebca50fb98ee7/FLAG66eeb1ffd [2022-11-23 14:10:06,775 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/data/7c9c56e42/6d17029d913e4c7994eebca50fb98ee7 [2022-11-23 14:10:06,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:10:06,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:10:06,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:10:06,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:10:06,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:10:06,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:06" (1/1) ... [2022-11-23 14:10:06,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dd7ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:06, skipping insertion in model container [2022-11-23 14:10:06,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:06" (1/1) ... [2022-11-23 14:10:06,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:10:06,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:10:06,951 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/sv-benchmarks/c/ldv-regression/structure_assignment.i[305,318] [2022-11-23 14:10:06,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:10:06,978 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:10:06,987 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/sv-benchmarks/c/ldv-regression/structure_assignment.i[305,318] [2022-11-23 14:10:06,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:10:07,005 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:10:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07 WrapperNode [2022-11-23 14:10:07,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:10:07,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:10:07,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:10:07,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:10:07,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,038 INFO L138 Inliner]: procedures = 13, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-11-23 14:10:07,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:10:07,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:10:07,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:10:07,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:10:07,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,056 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:10:07,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:10:07,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:10:07,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:10:07,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (1/1) ... [2022-11-23 14:10:07,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:10:07,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:10:07,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:10:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:10:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:10:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:10:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:10:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:10:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:10:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:10:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:10:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:10:07,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:10:07,203 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:10:07,353 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:10:07,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:10:07,373 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:10:07,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:07 BoogieIcfgContainer [2022-11-23 14:10:07,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:10:07,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:10:07,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:10:07,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:10:07,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:10:06" (1/3) ... [2022-11-23 14:10:07,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dda2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:07, skipping insertion in model container [2022-11-23 14:10:07,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:07" (2/3) ... [2022-11-23 14:10:07,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dda2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:07, skipping insertion in model container [2022-11-23 14:10:07,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:07" (3/3) ... [2022-11-23 14:10:07,387 INFO L112 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2022-11-23 14:10:07,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:10:07,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 14:10:07,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:10:07,475 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;@46bc31cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:10:07,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-23 14:10:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 10 states have (on average 2.3) internal successors, (23), 22 states have internal predecessors, (23), 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) [2022-11-23 14:10:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:10:07,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:07,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:10:07,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2112, now seen corresponding path program 1 times [2022-11-23 14:10:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:07,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339643825] [2022-11-23 14:10:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:07,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:07,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:07,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339643825] [2022-11-23 14:10:07,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339643825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:07,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:07,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:10:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449224973] [2022-11-23 14:10:07,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:07,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:07,849 INFO L87 Difference]: Start difference. First operand has 23 states, 10 states have (on average 2.3) internal successors, (23), 22 states have internal predecessors, (23), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:10:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:07,930 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2022-11-23 14:10:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-23 14:10:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:07,941 INFO L225 Difference]: With dead ends: 21 [2022-11-23 14:10:07,941 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 14:10:07,943 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 [2022-11-23 14:10:07,947 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:07,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 7 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:10:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 14:10:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 14:10:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 10 states have (on average 1.9) internal successors, (19), 19 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) [2022-11-23 14:10:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2022-11-23 14:10:08,039 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 2 [2022-11-23 14:10:08,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:08,039 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2022-11-23 14:10:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:10:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2022-11-23 14:10:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:10:08,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:08,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:10:08,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:10:08,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2113, now seen corresponding path program 1 times [2022-11-23 14:10:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:08,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058610713] [2022-11-23 14:10:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:08,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:08,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058610713] [2022-11-23 14:10:08,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058610713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:08,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:08,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:10:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306905753] [2022-11-23 14:10:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:08,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:08,308 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:10:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:08,342 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2022-11-23 14:10:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:08,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-23 14:10:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:08,344 INFO L225 Difference]: With dead ends: 18 [2022-11-23 14:10:08,344 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 14:10:08,344 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 [2022-11-23 14:10:08,346 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:08,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:10:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 14:10:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 14:10:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.7) internal successors, (17), 17 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) [2022-11-23 14:10:08,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2022-11-23 14:10:08,352 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 2 [2022-11-23 14:10:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:08,352 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2022-11-23 14:10:08,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:10:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2022-11-23 14:10:08,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:10:08,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:08,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:10:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:10:08,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2028867, now seen corresponding path program 1 times [2022-11-23 14:10:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:08,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909330409] [2022-11-23 14:10:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:08,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:08,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:08,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909330409] [2022-11-23 14:10:08,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909330409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:08,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:08,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:10:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211884102] [2022-11-23 14:10:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:08,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:08,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:08,421 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:10:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:08,447 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-23 14:10:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 14:10:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:08,449 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:10:08,449 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 14:10:08,449 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 [2022-11-23 14:10:08,451 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:08,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:10:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 14:10:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 14:10:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 14 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) [2022-11-23 14:10:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-23 14:10:08,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2022-11-23 14:10:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:08,456 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-23 14:10:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:10:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-23 14:10:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:10:08,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:08,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:10:08,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:10:08,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2028868, now seen corresponding path program 1 times [2022-11-23 14:10:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:08,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945098870] [2022-11-23 14:10:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:08,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:08,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:08,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945098870] [2022-11-23 14:10:08,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945098870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:08,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:08,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:10:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408158608] [2022-11-23 14:10:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:08,615 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:10:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:08,634 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-11-23 14:10:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 14:10:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:08,635 INFO L225 Difference]: With dead ends: 12 [2022-11-23 14:10:08,636 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 14:10:08,636 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 [2022-11-23 14:10:08,637 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:08,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:10:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 14:10:08,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-23 14:10:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 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) [2022-11-23 14:10:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-11-23 14:10:08,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 4 [2022-11-23 14:10:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:08,642 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-11-23 14:10:08,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-23 14:10:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-11-23 14:10:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:10:08,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:08,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:08,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:10:08,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1095704720, now seen corresponding path program 1 times [2022-11-23 14:10:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227759093] [2022-11-23 14:10:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:08,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227759093] [2022-11-23 14:10:08,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227759093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:08,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:08,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:10:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112594466] [2022-11-23 14:10:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:08,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:10:08,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:10:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:10:08,746 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-23 14:10:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:08,799 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2022-11-23 14:10:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:10:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-11-23 14:10:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:08,800 INFO L225 Difference]: With dead ends: 10 [2022-11-23 14:10:08,800 INFO L226 Difference]: Without dead ends: 10 [2022-11-23 14:10:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:10:08,802 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:08,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:10:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-23 14:10:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-23 14:10:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 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) [2022-11-23 14:10:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2022-11-23 14:10:08,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 8 [2022-11-23 14:10:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2022-11-23 14:10:08,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-23 14:10:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2022-11-23 14:10:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:10:08,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:08,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:10:08,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-23 14:10:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -392893783, now seen corresponding path program 1 times [2022-11-23 14:10:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049861409] [2022-11-23 14:10:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:10:09,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:09,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049861409] [2022-11-23 14:10:09,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049861409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:09,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:09,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:10:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242808014] [2022-11-23 14:10:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:10:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:10:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:10:09,045 INFO L87 Difference]: Start difference. First operand 10 states and 9 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) [2022-11-23 14:10:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:09,072 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-11-23 14:10:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:10:09,073 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 [2022-11-23 14:10:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:09,073 INFO L225 Difference]: With dead ends: 9 [2022-11-23 14:10:09,073 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:10:09,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:10:09,081 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:09,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:10:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:10:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:10:09,082 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) [2022-11-23 14:10:09,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:10:09,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-11-23 14:10:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:09,083 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:10:09,083 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) [2022-11-23 14:10:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:10:09,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:10:09,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-23 14:10:09,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-23 14:10:09,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-23 14:10:09,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-23 14:10:09,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-23 14:10:09,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-23 14:10:09,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-23 14:10:09,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-23 14:10:09,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-23 14:10:09,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-23 14:10:09,088 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-11-23 14:10:09,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2022-11-23 14:10:09,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:10:09,099 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-23 14:10:09,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:10:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:10:09 BoogieIcfgContainer [2022-11-23 14:10:09,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:10:09,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:10:09,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:10:09,113 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:10:09,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:07" (3/4) ... [2022-11-23 14:10:09,117 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:10:09,128 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-23 14:10:09,129 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 14:10:09,129 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:10:09,129 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:10:09,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:10:09,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:10:09,166 INFO L158 Benchmark]: Toolchain (without parser) took 2386.46ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 89.4MB in the end (delta: 52.0MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,169 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:10:09,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.43ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 131.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.68ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 130.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:10:09,170 INFO L158 Benchmark]: Boogie Preprocessor took 19.54ms. Allocated memory is still 172.0MB. Free memory was 130.2MB in the beginning and 128.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,171 INFO L158 Benchmark]: RCFGBuilder took 317.38ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 117.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,171 INFO L158 Benchmark]: TraceAbstraction took 1729.60ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 92.5MB in the end (delta: 23.7MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,172 INFO L158 Benchmark]: Witness Printer took 54.15ms. Allocated memory is still 172.0MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:10:09,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.43ms. Allocated memory is still 172.0MB. Free memory was 141.4MB in the beginning and 131.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.68ms. Allocated memory is still 172.0MB. Free memory was 131.6MB in the beginning and 130.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.54ms. Allocated memory is still 172.0MB. Free memory was 130.2MB in the beginning and 128.8MB in the end (delta: 1.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 317.38ms. Allocated memory is still 172.0MB. Free memory was 128.8MB in the beginning and 117.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1729.60ms. Allocated memory is still 172.0MB. Free memory was 116.3MB in the beginning and 92.5MB in the end (delta: 23.7MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Witness Printer took 54.15ms. Allocated memory is still 172.0MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). 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: -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: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 21]: 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, 23 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 24 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 14:10:09,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8136d14-c339-485d-a09c-714186e1784a/bin/utaipan-Q6hlc19bkW/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