./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0 --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 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 --- 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-e04fb08 [2022-11-16 15:54:16,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:54:16,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:54:16,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:54:16,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:54:16,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:54:16,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:54:16,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:54:16,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:54:16,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:54:16,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:54:16,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:54:16,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:54:16,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:54:16,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:54:16,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:54:16,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:54:16,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:54:16,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:54:16,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:54:16,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:54:16,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:54:16,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:54:16,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:54:16,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:54:16,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:54:16,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:54:16,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:54:16,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:54:16,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:54:16,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:54:16,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:54:16,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:54:16,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:54:16,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:54:16,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:54:16,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:54:16,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:54:16,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:54:16,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:54:16,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:54:16,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-16 15:54:16,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:54:16,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:54:16,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:54:16,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:54:16,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:54:16,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:54:16,216 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:54:16,216 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:54:16,216 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:54:16,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:54:16,217 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:54:16,217 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:54:16,218 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:54:16,218 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:54:16,218 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:54:16,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:54:16,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:54:16,219 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:54:16,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 15:54:16,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 15:54:16,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:54:16,221 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 15:54:16,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:54:16,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:54:16,222 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 15:54:16,222 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 15:54:16,222 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 15:54:16,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:54:16,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 15:54:16,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:54:16,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:54:16,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:54:16,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:54:16,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:54:16,224 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:54:16,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:54:16,224 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:54:16,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:54:16,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:54:16,225 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_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 [2022-11-16 15:54:16,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:54:16,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:54:16,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:54:16,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:54:16,550 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:54:16,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2022-11-16 15:54:16,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/data/432b2a60a/73699f6e37584d72a39958af33af801c/FLAGbe4bdbdd2 [2022-11-16 15:54:17,228 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:54:17,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2022-11-16 15:54:17,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/data/432b2a60a/73699f6e37584d72a39958af33af801c/FLAGbe4bdbdd2 [2022-11-16 15:54:17,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/data/432b2a60a/73699f6e37584d72a39958af33af801c [2022-11-16 15:54:17,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:54:17,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:54:17,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:54:17,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:54:17,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:54:17,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:17" (1/1) ... [2022-11-16 15:54:17,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460486f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:17, skipping insertion in model container [2022-11-16 15:54:17,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:54:17" (1/1) ... [2022-11-16 15:54:17,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:54:17,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:54:18,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:54:18,064 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:54:18,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:54:18,133 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:54:18,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18 WrapperNode [2022-11-16 15:54:18,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:54:18,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:54:18,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:54:18,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:54:18,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,179 INFO L138 Inliner]: procedures = 109, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-11-16 15:54:18,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:54:18,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:54:18,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:54:18,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:54:18,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:54:18,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:54:18,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:54:18,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:54:18,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (1/1) ... [2022-11-16 15:54:18,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:54:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:18,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:54:18,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:54:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 15:54:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 15:54:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 15:54:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 15:54:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:54:18,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:54:18,488 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:54:18,490 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:54:18,690 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:54:18,744 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:54:18,744 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:54:18,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:18 BoogieIcfgContainer [2022-11-16 15:54:18,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:54:18,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:54:18,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:54:18,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:54:18,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:54:17" (1/3) ... [2022-11-16 15:54:18,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f951fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:54:18, skipping insertion in model container [2022-11-16 15:54:18,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:54:18" (2/3) ... [2022-11-16 15:54:18,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f951fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:54:18, skipping insertion in model container [2022-11-16 15:54:18,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:18" (3/3) ... [2022-11-16 15:54:18,771 INFO L112 eAbstractionObserver]: Analyzing ICFG genady-alloca.i [2022-11-16 15:54:18,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:54:18,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-16 15:54:18,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:54:18,899 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;@13411cc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:54:18,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 15:54:18,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 15:54:18,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:18,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 15:54:18,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2577, now seen corresponding path program 1 times [2022-11-16 15:54:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:18,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459939526] [2022-11-16 15:54:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:19,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:19,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459939526] [2022-11-16 15:54:19,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459939526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:19,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:19,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 15:54:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347895297] [2022-11-16 15:54:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:19,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:19,336 INFO L87 Difference]: Start difference. First operand has 30 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-16 15:54:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:19,486 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-11-16 15:54:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:19,489 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 [2022-11-16 15:54:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:19,497 INFO L225 Difference]: With dead ends: 26 [2022-11-16 15:54:19,499 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 15:54:19,504 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 [2022-11-16 15:54:19,511 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:19,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 15:54:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 15:54:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 15:54:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 24 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) [2022-11-16 15:54:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-11-16 15:54:19,553 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 2 [2022-11-16 15:54:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:19,553 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-11-16 15:54:19,554 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) [2022-11-16 15:54:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-11-16 15:54:19,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 15:54:19,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:19,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 15:54:19,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:54:19,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2578, now seen corresponding path program 1 times [2022-11-16 15:54:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:19,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529664921] [2022-11-16 15:54:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:19,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:19,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:19,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529664921] [2022-11-16 15:54:19,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529664921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:19,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:19,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 15:54:19,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803063315] [2022-11-16 15:54:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:19,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:19,752 INFO L87 Difference]: Start difference. First operand 25 states and 25 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) [2022-11-16 15:54:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:19,804 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-16 15:54:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:19,806 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 [2022-11-16 15:54:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:19,806 INFO L225 Difference]: With dead ends: 21 [2022-11-16 15:54:19,807 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 15:54:19,811 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 [2022-11-16 15:54:19,813 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:19,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 15:54:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 15:54:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.75) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-16 15:54:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-16 15:54:19,824 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 2 [2022-11-16 15:54:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:19,827 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-16 15:54:19,828 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) [2022-11-16 15:54:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-16 15:54:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 15:54:19,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:19,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 15:54:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 15:54:19,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash 79863, now seen corresponding path program 1 times [2022-11-16 15:54:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:19,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296149812] [2022-11-16 15:54:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:19,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:19,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296149812] [2022-11-16 15:54:19,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296149812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:19,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 15:54:19,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881267036] [2022-11-16 15:54:19,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:19,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:19,958 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:19,988 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-16 15:54:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:19,989 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 [2022-11-16 15:54:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:19,990 INFO L225 Difference]: With dead ends: 17 [2022-11-16 15:54:19,990 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 15:54:19,991 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 [2022-11-16 15:54:19,992 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:19,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 15:54:19,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 15:54:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 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) [2022-11-16 15:54:19,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-16 15:54:19,996 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 3 [2022-11-16 15:54:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:19,997 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-16 15:54:19,997 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) [2022-11-16 15:54:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-16 15:54:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 15:54:19,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:19,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 15:54:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 15:54:19,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash 79864, now seen corresponding path program 1 times [2022-11-16 15:54:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906438391] [2022-11-16 15:54:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:20,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:20,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906438391] [2022-11-16 15:54:20,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906438391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:20,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:20,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 15:54:20,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389742899] [2022-11-16 15:54:20,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:20,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 15:54:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 15:54:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 15:54:20,163 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:20,199 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-16 15:54:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 15:54:20,201 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 [2022-11-16 15:54:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:20,202 INFO L225 Difference]: With dead ends: 13 [2022-11-16 15:54:20,202 INFO L226 Difference]: Without dead ends: 13 [2022-11-16 15:54:20,202 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 [2022-11-16 15:54:20,203 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:20,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-16 15:54:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-16 15:54:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-16 15:54:20,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2022-11-16 15:54:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:20,207 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-16 15:54:20,207 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) [2022-11-16 15:54:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-16 15:54:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 15:54:20,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:20,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:20,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 15:54:20,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1470205405, now seen corresponding path program 1 times [2022-11-16 15:54:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:20,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139460186] [2022-11-16 15:54:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:20,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:20,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:20,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139460186] [2022-11-16 15:54:20,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139460186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:20,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:54:20,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 15:54:20,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357796859] [2022-11-16 15:54:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:20,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 15:54:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:20,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 15:54:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 15:54:20,504 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2022-11-16 15:54:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:20,586 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-16 15:54:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:54:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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 [2022-11-16 15:54:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:20,587 INFO L225 Difference]: With dead ends: 18 [2022-11-16 15:54:20,588 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 15:54:20,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 15:54:20,589 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:20,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:54:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 15:54:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-11-16 15:54:20,592 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) [2022-11-16 15:54:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-16 15:54:20,593 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2022-11-16 15:54:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:20,594 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-16 15:54:20,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2022-11-16 15:54:20,594 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-16 15:54:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 15:54:20,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:20,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 15:54:20,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1502303924, now seen corresponding path program 1 times [2022-11-16 15:54:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:20,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507449111] [2022-11-16 15:54:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:21,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:21,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507449111] [2022-11-16 15:54:21,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507449111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:21,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42827657] [2022-11-16 15:54:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:21,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:21,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 15:54:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:21,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 15:54:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:21,392 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 11 treesize of output 7 [2022-11-16 15:54:21,441 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 15:54:21,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-16 15:54:21,770 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 15:54:21,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2022-11-16 15:54:21,927 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 15:54:21,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2022-11-16 15:54:22,076 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 15:54:22,077 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 29 treesize of output 17 [2022-11-16 15:54:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:22,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:54:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:26,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42827657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:54:26,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723744496] [2022-11-16 15:54:26,536 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-16 15:54:26,536 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 15:54:26,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 15:54:26,547 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 15:54:26,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 15:54:26,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 15:54:26,626 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 11 treesize of output 7 [2022-11-16 15:54:26,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 15:54:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 28 [2022-11-16 15:54:26,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 15:54:26,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-16 15:54:27,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:27,036 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-16 15:54:27,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 255 treesize of output 222 [2022-11-16 15:54:27,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 15:54:27,143 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-16 15:54:27,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 194 [2022-11-16 15:54:27,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 15:54:27,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 15:54:27,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 15:54:27,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 15:54:27,405 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 15:54:27,405 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 15:54:27,421 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 15:54:29,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '363#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_#t~malloc3#1.base_7| Int)) (and (<= 0 |v_ULTIMATE.start_main_#t~malloc3#1.base_7|) (= (select |#valid| |v_ULTIMATE.start_main_#t~malloc3#1.base_7|) 0))) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-16 15:54:29,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 15:54:29,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 15:54:29,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 36 [2022-11-16 15:54:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718436139] [2022-11-16 15:54:29,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 15:54:29,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 15:54:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 15:54:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1792, Unknown=2, NotChecked=0, Total=2070 [2022-11-16 15:54:29,207 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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) [2022-11-16 15:54:34,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:34,265 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-11-16 15:54:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 15:54:34,266 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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 [2022-11-16 15:54:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:34,267 INFO L225 Difference]: With dead ends: 30 [2022-11-16 15:54:34,267 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 15:54:34,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=496, Invalid=2923, Unknown=3, NotChecked=0, Total=3422 [2022-11-16 15:54:34,270 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:34,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-11-16 15:54:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 15:54:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 15:54:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2022-11-16 15:54:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-11-16 15:54:34,275 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 15 [2022-11-16 15:54:34,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:34,275 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-11-16 15:54:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 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) [2022-11-16 15:54:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-11-16 15:54:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 15:54:34,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:54:34,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-16 15:54:34,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:34,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:34,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-16 15:54:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:54:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 287261332, now seen corresponding path program 2 times [2022-11-16 15:54:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:54:34,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580557729] [2022-11-16 15:54:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:54:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:54:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:54:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:54:36,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 15:54:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580557729] [2022-11-16 15:54:36,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580557729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 15:54:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857708234] [2022-11-16 15:54:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 15:54:36,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:54:36,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:54:36,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 15:54:36,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 15:54:36,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:54:36,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 15:54:36,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:54:36,604 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc3#1.base_8| Int) (v_ArrVal_122 Int) (|v_ULTIMATE.start_main_#t~malloc2#1.base_8| Int) (v_ArrVal_121 Int) (v_ArrVal_120 Int)) (and (= |c_#valid| (store (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_8| v_ArrVal_120) |v_ULTIMATE.start_main_#t~malloc3#1.base_8| v_ArrVal_121) |v_ULTIMATE.start_main_#t~malloc2#1.base_8| 0) |v_ULTIMATE.start_main_#t~malloc3#1.base_8| 0)) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_8| v_ArrVal_122) |v_ULTIMATE.start_main_#t~malloc3#1.base_8|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_8|) 0))) is different from true [2022-11-16 15:54:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 15:54:36,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:54:36,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857708234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:54:36,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 15:54:36,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [22] total 24 [2022-11-16 15:54:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352874675] [2022-11-16 15:54:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:54:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:54:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 15:54:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:54:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=435, Unknown=1, NotChecked=44, Total=600 [2022-11-16 15:54:36,609 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:54:36,613 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-16 15:54:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 15:54:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-16 15:54:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:54:36,614 INFO L225 Difference]: With dead ends: 29 [2022-11-16 15:54:36,614 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 15:54:36,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=435, Unknown=1, NotChecked=44, Total=600 [2022-11-16 15:54:36,615 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:54:36,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-16 15:54:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 15:54:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 15:54:36,617 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) [2022-11-16 15:54:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 15:54:36,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-16 15:54:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:54:36,617 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 15:54:36,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:54:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 15:54:36,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 15:54:36,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-11-16 15:54:36,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-11-16 15:54:36,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-11-16 15:54:36,621 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-11-16 15:54:36,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-11-16 15:54:36,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-11-16 15:54:36,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-11-16 15:54:36,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-11-16 15:54:36,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-11-16 15:54:36,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-11-16 15:54:36,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-11-16 15:54:36,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-11-16 15:54:36,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2022-11-16 15:54:36,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2022-11-16 15:54:36,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2022-11-16 15:54:36,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2022-11-16 15:54:36,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2022-11-16 15:54:36,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:54:36,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:54:36,833 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-16 15:54:36,835 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:54:36,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:54:36 BoogieIcfgContainer [2022-11-16 15:54:36,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:54:36,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:54:36,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:54:36,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:54:36,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:54:18" (3/4) ... [2022-11-16 15:54:36,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 15:54:36,856 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 15:54:36,857 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 15:54:36,857 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 15:54:36,857 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 15:54:36,895 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 15:54:36,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:54:36,896 INFO L158 Benchmark]: Toolchain (without parser) took 19257.51ms. Allocated memory was 111.1MB in the beginning and 180.4MB in the end (delta: 69.2MB). Free memory was 68.7MB in the beginning and 54.4MB in the end (delta: 14.3MB). Peak memory consumption was 82.5MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,896 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:54:36,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.01ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 80.5MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.15ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 78.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:54:36,909 INFO L158 Benchmark]: Boogie Preprocessor took 52.48ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 77.5MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,909 INFO L158 Benchmark]: RCFGBuilder took 513.62ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 64.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,910 INFO L158 Benchmark]: TraceAbstraction took 18088.18ms. Allocated memory was 111.1MB in the beginning and 180.4MB in the end (delta: 69.2MB). Free memory was 63.8MB in the beginning and 56.5MB in the end (delta: 7.3MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,910 INFO L158 Benchmark]: Witness Printer took 57.38ms. Allocated memory is still 180.4MB. Free memory was 56.5MB in the beginning and 54.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:54:36,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.01ms. Allocated memory is still 111.1MB. Free memory was 68.5MB in the beginning and 80.5MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.15ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 78.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.48ms. Allocated memory is still 111.1MB. Free memory was 78.6MB in the beginning and 77.5MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 513.62ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 64.3MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18088.18ms. Allocated memory was 111.1MB in the beginning and 180.4MB in the end (delta: 69.2MB). Free memory was 63.8MB in the beginning and 56.5MB in the end (delta: 7.3MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. * Witness Printer took 57.38ms. Allocated memory is still 180.4MB. Free memory was 56.5MB in the beginning and 54.4MB 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: -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: 546]: 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, 30 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 18.0s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 122 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 30 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 43, 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, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 37 QuantifiedInterpolants, 2206 SizeOfPredicates, 13 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 30/69 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 15:54:36,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a56a74-57cb-4705-9d6f-30f6f2e487cf/bin/utaipan-Xvt2sAort0/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