./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9551eac17e9ca0a42612f73eb01545dde991582 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:51:06,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:51:06,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:51:06,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:51:06,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:51:06,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:51:06,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:51:06,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:51:06,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:51:06,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:51:06,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:51:06,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:51:06,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:51:06,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:51:06,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:51:06,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:51:06,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:51:06,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:51:06,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:51:06,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:51:06,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:51:06,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:51:06,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:51:06,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:51:06,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:51:06,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:51:06,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:51:06,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:51:06,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:51:06,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:51:06,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:51:06,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:51:06,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:51:06,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:51:06,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:51:06,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:51:06,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:51:06,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:51:06,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:51:06,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:51:06,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:51:06,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:51:06,267 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:51:06,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:51:06,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:51:06,275 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:51:06,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:51:06,276 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:51:06,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:51:06,276 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:51:06,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:51:06,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:51:06,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:51:06,278 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:51:06,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:51:06,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:51:06,279 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:51:06,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:51:06,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:51:06,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:51:06,281 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:51:06,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:51:06,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:51:06,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:51:06,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:51:06,282 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:51:06,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:51:06,283 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:51:06,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:51:06,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:51:06,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:51:06,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:51:06,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:51:06,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:51:06,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:06,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:51:06,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:51:06,286 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:51:06,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:51:06,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:51:06,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:51:06,287 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9551eac17e9ca0a42612f73eb01545dde991582 [2021-10-13 07:51:06,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:51:06,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:51:06,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:51:06,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:51:06,573 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:51:06,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-13 07:51:06,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/data/4e64a5519/7dc7337f29b543e0bd0c9207d838c9f8/FLAG5dace7193 [2021-10-13 07:51:07,184 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:51:07,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-13 07:51:07,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/data/4e64a5519/7dc7337f29b543e0bd0c9207d838c9f8/FLAG5dace7193 [2021-10-13 07:51:07,482 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/data/4e64a5519/7dc7337f29b543e0bd0c9207d838c9f8 [2021-10-13 07:51:07,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:51:07,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:51:07,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:07,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:51:07,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:51:07,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d47651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07, skipping insertion in model container [2021-10-13 07:51:07,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:51:07,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:51:07,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:07,874 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:51:07,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:51:07,939 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:51:07,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07 WrapperNode [2021-10-13 07:51:07,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:51:07,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:07,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:51:07,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:51:07,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:51:07,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:51:07,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:51:07,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:51:07,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:07,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:08,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:08,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:08,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:08,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:51:08,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:51:08,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:51:08,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:51:08,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (1/1) ... [2021-10-13 07:51:08,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:51:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:08,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:51:08,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:51:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:51:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:51:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:51:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:51:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:51:08,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:51:08,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:51:08,585 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 07:51:08,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:08 BoogieIcfgContainer [2021-10-13 07:51:08,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:51:08,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:51:08,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:51:08,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:51:08,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:51:07" (1/3) ... [2021-10-13 07:51:08,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:08, skipping insertion in model container [2021-10-13 07:51:08,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:51:07" (2/3) ... [2021-10-13 07:51:08,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96d495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:51:08, skipping insertion in model container [2021-10-13 07:51:08,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:08" (3/3) ... [2021-10-13 07:51:08,606 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-10-13 07:51:08,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:51:08,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 07:51:08,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:51:08,689 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:51:08,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 07:51:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:51:08,725 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:08,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:51:08,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash 107322, now seen corresponding path program 1 times [2021-10-13 07:51:08,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:08,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127027256] [2021-10-13 07:51:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:08,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:08,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:08,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343804245] [2021-10-13 07:51:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:08,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:08,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:08,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:51:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:08,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:51:08,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:08,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:09,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:09,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127027256] [2021-10-13 07:51:09,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:09,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343804245] [2021-10-13 07:51:09,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343804245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:09,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:09,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:51:09,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304796301] [2021-10-13 07:51:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:09,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:09,034 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:09,065 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-13 07:51:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:51:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:09,074 INFO L225 Difference]: With dead ends: 16 [2021-10-13 07:51:09,074 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:51:09,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:51:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 07:51:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 2.0) internal successors, (16), 14 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) [2021-10-13 07:51:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-13 07:51:09,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2021-10-13 07:51:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:09,099 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 07:51:09,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-13 07:51:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:51:09,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:09,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:51:09,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:09,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:51:09,319 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 3327913, now seen corresponding path program 1 times [2021-10-13 07:51:09,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:09,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103057827] [2021-10-13 07:51:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:09,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:09,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:09,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062872287] [2021-10-13 07:51:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:09,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:09,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:09,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:51:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:09,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:51:09,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:09,491 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-13 07:51:09,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 28 [2021-10-13 07:51:09,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2021-10-13 07:51:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:09,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:10,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:10,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103057827] [2021-10-13 07:51:10,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:10,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062872287] [2021-10-13 07:51:10,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062872287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:10,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:10,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 07:51:10,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544126335] [2021-10-13 07:51:10,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:51:10,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:51:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:51:10,073 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-10-13 07:51:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:11,230 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 07:51:11,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:51:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 4 [2021-10-13 07:51:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:11,231 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:51:11,232 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:51:11,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 686.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:51:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:51:11,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:51:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 8 states have (on average 1.875) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-13 07:51:11,235 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2021-10-13 07:51:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:11,235 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-13 07:51:11,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-10-13 07:51:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-13 07:51:11,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:51:11,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:11,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:51:11,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:11,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:11,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:11,438 INFO L82 PathProgramCache]: Analyzing trace with hash 3327912, now seen corresponding path program 1 times [2021-10-13 07:51:11,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:11,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156327536] [2021-10-13 07:51:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:11,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:11,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:11,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946525036] [2021-10-13 07:51:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:11,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:11,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:11,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:11,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:51:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:51:11,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:11,548 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-10-13 07:51:11,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 23 [2021-10-13 07:51:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:11,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:11,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:11,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156327536] [2021-10-13 07:51:11,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:11,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946525036] [2021-10-13 07:51:11,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946525036] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:11,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:11,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 07:51:11,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736911490] [2021-10-13 07:51:11,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:11,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:11,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:11,715 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-13 07:51:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:11,736 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-13 07:51:11,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:11,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 4 [2021-10-13 07:51:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:11,737 INFO L225 Difference]: With dead ends: 12 [2021-10-13 07:51:11,737 INFO L226 Difference]: Without dead ends: 12 [2021-10-13 07:51:11,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-13 07:51:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 07:51:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.625) internal successors, (13), 11 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) [2021-10-13 07:51:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-13 07:51:11,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2021-10-13 07:51:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:11,741 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 07:51:11,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-13 07:51:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-13 07:51:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:51:11,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:11,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:51:11,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:11,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:11,966 INFO L82 PathProgramCache]: Analyzing trace with hash 103207990, now seen corresponding path program 1 times [2021-10-13 07:51:11,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:11,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908708697] [2021-10-13 07:51:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:11,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:11,972 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:11,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233040987] [2021-10-13 07:51:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:11,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:11,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:12,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:51:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:12,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:51:12,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:12,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:12,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:12,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908708697] [2021-10-13 07:51:12,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:12,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233040987] [2021-10-13 07:51:12,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233040987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:12,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:12,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:51:12,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010209550] [2021-10-13 07:51:12,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:51:12,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:51:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:12,144 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:12,275 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 07:51:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:51:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 07:51:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:12,277 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:51:12,277 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:51:12,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:51:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:51:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-13 07:51:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 07:51:12,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-10-13 07:51:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:12,280 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 07:51:12,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-13 07:51:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:51:12,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:12,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:12,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:12,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:12,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash 358722608, now seen corresponding path program 1 times [2021-10-13 07:51:12,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:12,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873214306] [2021-10-13 07:51:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:12,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:12,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:12,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254783633] [2021-10-13 07:51:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:12,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:12,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:12,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:12,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:51:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:51:12,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:51:12,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:51:12,644 INFO L354 Elim1Store]: treesize reduction 42, result has 36.4 percent of original size [2021-10-13 07:51:12,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 63 [2021-10-13 07:51:12,947 INFO L354 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2021-10-13 07:51:12,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 58 [2021-10-13 07:51:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:13,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:13,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:13,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873214306] [2021-10-13 07:51:13,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:13,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254783633] [2021-10-13 07:51:13,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254783633] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:13,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:13,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 07:51:13,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451832458] [2021-10-13 07:51:13,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:51:13,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:51:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:51:13,055 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:13,148 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-13 07:51:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:51:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:51:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:13,149 INFO L225 Difference]: With dead ends: 12 [2021-10-13 07:51:13,149 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:51:13,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:51:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:51:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:51:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-13 07:51:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-13 07:51:13,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-10-13 07:51:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:13,152 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-13 07:51:13,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-13 07:51:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:51:13,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:13,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:13,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:13,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:13,353 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash 358721759, now seen corresponding path program 1 times [2021-10-13 07:51:13,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:13,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156141685] [2021-10-13 07:51:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:13,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:13,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:13,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404125060] [2021-10-13 07:51:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:13,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:13,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:13,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:13,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:51:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:51:13,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:13,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:14,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 112 [2021-10-13 07:51:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:51:27,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:27,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156141685] [2021-10-13 07:51:27,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:27,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404125060] [2021-10-13 07:51:27,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404125060] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:51:27,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:51:27,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-10-13 07:51:27,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544901835] [2021-10-13 07:51:27,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:51:27,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:51:27,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=65, Unknown=5, NotChecked=0, Total=110 [2021-10-13 07:51:27,428 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:27,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:27,525 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-13 07:51:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:51:27,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:51:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:27,526 INFO L225 Difference]: With dead ends: 11 [2021-10-13 07:51:27,526 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:51:27,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 12837.7ms TimeCoverageRelationStatistics Valid=49, Invalid=78, Unknown=5, NotChecked=0, Total=132 [2021-10-13 07:51:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:51:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-13 07:51:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 07:51:27,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-10-13 07:51:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:27,528 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 07:51:27,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-13 07:51:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:51:27,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:27,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:27,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:27,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:27,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1764527369, now seen corresponding path program 1 times [2021-10-13 07:51:27,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:27,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924084955] [2021-10-13 07:51:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:27,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:27,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:27,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304699395] [2021-10-13 07:51:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:27,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:27,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:27,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:27,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:51:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:27,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:51:27,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:27,921 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-10-13 07:51:27,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 23 [2021-10-13 07:51:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:28,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:28,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:28,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924084955] [2021-10-13 07:51:28,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:28,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304699395] [2021-10-13 07:51:28,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304699395] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:28,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:28,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 07:51:28,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214261180] [2021-10-13 07:51:28,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:51:28,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:51:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:28,259 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-13 07:51:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:28,275 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-13 07:51:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:51:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:51:28,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:28,276 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:51:28,276 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:51:28,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:51:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:51:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:51:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:51:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-13 07:51:28,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 8 [2021-10-13 07:51:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:28,278 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-13 07:51:28,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-13 07:51:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-13 07:51:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:51:28,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:51:28,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:51:28,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:28,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:28,479 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-10-13 07:51:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:51:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1764527368, now seen corresponding path program 1 times [2021-10-13 07:51:28,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:51:28,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45455878] [2021-10-13 07:51:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:28,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:51:28,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:51:28,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295623884] [2021-10-13 07:51:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:51:28,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:51:28,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:51:28,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:51:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:51:28,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:51:28,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:51:28,634 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-10-13 07:51:28,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 21 [2021-10-13 07:51:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:28,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:51:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:51:29,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:51:29,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45455878] [2021-10-13 07:51:29,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:51:29,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295623884] [2021-10-13 07:51:29,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295623884] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:51:29,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:51:29,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 07:51:29,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717473294] [2021-10-13 07:51:29,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:51:29,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:51:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:51:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:51:29,536 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-13 07:51:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:51:29,860 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-13 07:51:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:51:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:51:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:51:29,861 INFO L225 Difference]: With dead ends: 8 [2021-10-13 07:51:29,861 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:51:29,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 441.9ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:51:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:51:29,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:51:29,862 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) [2021-10-13 07:51:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:51:29,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-13 07:51:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:51:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:51:29,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-13 07:51:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:51:29,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:51:29,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:51:29,865 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:51:29,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:51:29,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:51:29,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:51:29,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:51:29,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:51:29,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:51:30,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:51:30,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:51:30,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:51:30 BoogieIcfgContainer [2021-10-13 07:51:30,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:51:30,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:51:30,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:51:30,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:51:30,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:51:08" (3/4) ... [2021-10-13 07:51:30,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:51:30,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 07:51:30,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:51:30,090 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:51:30,137 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:51:30,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:51:30,138 INFO L168 Benchmark]: Toolchain (without parser) took 22653.08 ms. Allocated memory was 96.5 MB in the beginning and 169.9 MB in the end (delta: 73.4 MB). Free memory was 71.6 MB in the beginning and 124.7 MB in the end (delta: -53.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:30,139 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:30,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.11 ms. Allocated memory was 96.5 MB in the beginning and 140.5 MB in the end (delta: 44.0 MB). Free memory was 71.4 MB in the beginning and 109.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:30,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 140.5 MB. Free memory was 109.6 MB in the beginning and 108.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:30,140 INFO L168 Benchmark]: Boogie Preprocessor took 25.74 ms. Allocated memory is still 140.5 MB. Free memory was 108.0 MB in the beginning and 106.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:30,140 INFO L168 Benchmark]: RCFGBuilder took 582.86 ms. Allocated memory is still 140.5 MB. Free memory was 106.8 MB in the beginning and 90.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:30,141 INFO L168 Benchmark]: TraceAbstraction took 21476.95 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:51:30,141 INFO L168 Benchmark]: Witness Printer took 64.28 ms. Allocated memory is still 169.9 MB. Free memory was 127.9 MB in the beginning and 124.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:51:30,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 55.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 454.11 ms. Allocated memory was 96.5 MB in the beginning and 140.5 MB in the end (delta: 44.0 MB). Free memory was 71.4 MB in the beginning and 109.6 MB in the end (delta: -38.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.84 ms. Allocated memory is still 140.5 MB. Free memory was 109.6 MB in the beginning and 108.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.74 ms. Allocated memory is still 140.5 MB. Free memory was 108.0 MB in the beginning and 106.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 582.86 ms. Allocated memory is still 140.5 MB. Free memory was 106.8 MB in the beginning and 90.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21476.95 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.28 ms. Allocated memory is still 169.9 MB. Free memory was 127.9 MB in the beginning and 124.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: 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, 16 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 21397.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 26.4ms, AutomataDifference: 1918.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 109 SDslu, 23 SDs, 0 SdLazy, 136 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 952.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 14128.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.0ms SsaConstructionTime, 92.6ms SatisfiabilityAnalysisTime, 16829.3ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 76 ConstructedInterpolants, 17 QuantifiedInterpolants, 1707 SizeOfPredicates, 26 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:51:30,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabc6693-4d14-418d-80f4-0e11bef84f6e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...