./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 822411a57a10ce043cb0121fce52bdc7e9506783 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:35:00,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:35:00,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:35:00,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:35:00,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:35:00,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:35:00,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:35:00,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:35:00,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:35:00,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:35:00,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:35:00,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:35:00,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:35:00,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:35:00,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:35:00,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:35:00,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:35:00,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:35:00,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:35:00,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:35:00,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:35:00,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:35:00,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:35:00,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:35:00,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:35:00,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:35:00,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:35:00,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:35:00,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:35:00,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:35:00,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:35:00,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:35:00,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:35:00,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:35:00,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:35:00,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:35:00,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:35:00,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:35:00,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:35:00,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:35:00,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:35:00,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 16:35:00,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:35:00,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:35:00,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:35:00,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:35:00,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:35:00,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:35:00,353 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:35:00,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:35:00,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:35:00,354 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:35:00,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:35:00,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:35:00,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:35:00,356 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:35:00,356 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:35:00,356 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 16:35:00,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:35:00,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:35:00,362 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:35:00,362 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:35:00,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:35:00,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:35:00,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:35:00,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:35:00,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:35:00,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:35:00,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:35:00,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:35:00,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:35:00,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2021-08-30 16:35:00,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:35:00,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:35:00,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:35:00,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:35:00,716 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:35:00,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-08-30 16:35:00,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfb6841c/1648e993e6fa4cd8b07917ac0eae75f4/FLAG48cdaa90f [2021-08-30 16:35:01,273 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:35:01,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-08-30 16:35:01,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfb6841c/1648e993e6fa4cd8b07917ac0eae75f4/FLAG48cdaa90f [2021-08-30 16:35:01,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfb6841c/1648e993e6fa4cd8b07917ac0eae75f4 [2021-08-30 16:35:01,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:35:01,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:35:01,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:35:01,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:35:01,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:35:01,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:35:01" (1/1) ... [2021-08-30 16:35:01,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2d2c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:01, skipping insertion in model container [2021-08-30 16:35:01,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:35:01" (1/1) ... [2021-08-30 16:35:01,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:35:01,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:35:01,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:35:01,954 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:35:02,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:35:02,056 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:35:02,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02 WrapperNode [2021-08-30 16:35:02,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:35:02,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:35:02,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:35:02,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:35:02,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:35:02,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:35:02,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:35:02,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:35:02,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (1/1) ... [2021-08-30 16:35:02,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:35:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:35:02,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 16:35:02,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 16:35:02,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:35:02,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:35:02,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 16:35:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 16:35:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 16:35:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 16:35:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 16:35:02,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2021-08-30 16:35:02,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:35:02,208 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:35:02,208 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:35:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:35:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:35:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:35:02,212 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:35:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:35:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:35:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:35:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:35:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:35:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:35:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:35:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:35:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:35:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:35:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:35:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:35:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:35:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:35:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:35:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:35:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:35:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:35:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:35:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:35:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:35:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:35:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:35:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:35:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:35:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2021-08-30 16:35:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:35:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:35:02,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:35:02,542 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 16:35:02,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:35:02 BoogieIcfgContainer [2021-08-30 16:35:02,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:35:02,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:35:02,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:35:02,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:35:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:35:01" (1/3) ... [2021-08-30 16:35:02,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470465d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:35:02, skipping insertion in model container [2021-08-30 16:35:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:02" (2/3) ... [2021-08-30 16:35:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470465d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:35:02, skipping insertion in model container [2021-08-30 16:35:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:35:02" (3/3) ... [2021-08-30 16:35:02,550 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-08-30 16:35:02,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:35:02,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-30 16:35:02,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:35:02,602 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 [2021-08-30 16:35:02,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-30 16:35:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:35:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:35:02,629 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:02,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:02,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2021-08-30 16:35:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:02,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504941325] [2021-08-30 16:35:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:02,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:02,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:02,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504941325] [2021-08-30 16:35:02,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504941325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:02,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:02,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:35:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580945098] [2021-08-30 16:35:02,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:35:02,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:35:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:35:02,988 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:03,135 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-30 16:35:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:35:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 16:35:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:03,143 INFO L225 Difference]: With dead ends: 28 [2021-08-30 16:35:03,143 INFO L226 Difference]: Without dead ends: 23 [2021-08-30 16:35:03,145 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 75.85ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:35:03,147 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.83ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.54ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:03,148 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 20 Invalid, 74 Unknown, 0 Unchecked, 2.83ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 70.54ms Time] [2021-08-30 16:35:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-30 16:35:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-30 16:35:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-30 16:35:03,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-08-30 16:35:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:03,176 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-30 16:35:03,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-30 16:35:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:35:03,177 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:03,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:03,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:35:03,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cbzeroErr0REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:03,178 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2021-08-30 16:35:03,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:03,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304405921] [2021-08-30 16:35:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:03,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:03,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:03,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304405921] [2021-08-30 16:35:03,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304405921] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:03,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:03,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-30 16:35:03,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584401243] [2021-08-30 16:35:03,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:35:03,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:03,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:35:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:35:03,268 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:03,387 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-08-30 16:35:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:35:03,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-30 16:35:03,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:03,388 INFO L225 Difference]: With dead ends: 21 [2021-08-30 16:35:03,388 INFO L226 Difference]: Without dead ends: 21 [2021-08-30 16:35:03,389 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.81ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:35:03,390 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.25ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:03,390 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 17 Invalid, 88 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 69.25ms Time] [2021-08-30 16:35:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-30 16:35:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-08-30 16:35:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-08-30 16:35:03,394 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2021-08-30 16:35:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:03,394 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-08-30 16:35:03,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-08-30 16:35:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:35:03,395 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:03,395 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:03,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:35:03,396 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2021-08-30 16:35:03,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:03,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399671206] [2021-08-30 16:35:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:03,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:03,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:03,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399671206] [2021-08-30 16:35:03,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399671206] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:03,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:03,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 16:35:03,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170338597] [2021-08-30 16:35:03,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 16:35:03,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 16:35:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:35:03,561 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:03,718 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-08-30 16:35:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:35:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-30 16:35:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:03,721 INFO L225 Difference]: With dead ends: 27 [2021-08-30 16:35:03,721 INFO L226 Difference]: Without dead ends: 27 [2021-08-30 16:35:03,722 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 108.18ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:35:03,723 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.51ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:03,724 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 21 Invalid, 112 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 78.51ms Time] [2021-08-30 16:35:03,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-30 16:35:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-08-30 16:35:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-08-30 16:35:03,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-08-30 16:35:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:03,729 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-08-30 16:35:03,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-08-30 16:35:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 16:35:03,730 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:03,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:03,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:35:03,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2021-08-30 16:35:03,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:03,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922260753] [2021-08-30 16:35:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:03,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 16:35:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:03,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:03,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922260753] [2021-08-30 16:35:03,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922260753] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:03,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:03,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 16:35:03,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443880323] [2021-08-30 16:35:03,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 16:35:03,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 16:35:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:35:03,883 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:04,042 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-30 16:35:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 16:35:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-30 16:35:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:04,044 INFO L225 Difference]: With dead ends: 34 [2021-08-30 16:35:04,044 INFO L226 Difference]: Without dead ends: 34 [2021-08-30 16:35:04,044 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 95.05ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-08-30 16:35:04,045 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.39ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:04,046 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 145 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 87.39ms Time] [2021-08-30 16:35:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-30 16:35:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-08-30 16:35:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 16:35:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-08-30 16:35:04,052 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-08-30 16:35:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:04,053 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-08-30 16:35:04,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-08-30 16:35:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 16:35:04,054 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:04,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:04,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:35:04,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2021-08-30 16:35:04,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:04,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858829607] [2021-08-30 16:35:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:04,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 16:35:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:04,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:04,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858829607] [2021-08-30 16:35:04,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858829607] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:04,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:04,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 16:35:04,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721907851] [2021-08-30 16:35:04,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:35:04,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:35:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:35:04,185 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:04,384 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-30 16:35:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:35:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-08-30 16:35:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:04,385 INFO L225 Difference]: With dead ends: 28 [2021-08-30 16:35:04,385 INFO L226 Difference]: Without dead ends: 26 [2021-08-30 16:35:04,386 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.50ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-08-30 16:35:04,387 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.24ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:04,387 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 132 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [18 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 95.24ms Time] [2021-08-30 16:35:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-30 16:35:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-08-30 16:35:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-08-30 16:35:04,391 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2021-08-30 16:35:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:04,392 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-08-30 16:35:04,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-08-30 16:35:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 16:35:04,397 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:04,397 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:04,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 16:35:04,397 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2021-08-30 16:35:04,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:04,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092563769] [2021-08-30 16:35:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:04,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:04,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:04,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092563769] [2021-08-30 16:35:04,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092563769] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:35:04,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873441184] [2021-08-30 16:35:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:04,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:35:04,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:35:04,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:35:04,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 16:35:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:04,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 16:35:04,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:35:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:04,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:35:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:05,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873441184] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:35:05,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:35:05,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2021-08-30 16:35:05,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479745102] [2021-08-30 16:35:05,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 16:35:05,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 16:35:05,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-08-30 16:35:05,025 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:05,207 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-08-30 16:35:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 16:35:05,208 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 16:35:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:05,209 INFO L225 Difference]: With dead ends: 38 [2021-08-30 16:35:05,209 INFO L226 Difference]: Without dead ends: 38 [2021-08-30 16:35:05,209 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 191.20ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-08-30 16:35:05,210 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.98ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:05,210 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 45 Invalid, 195 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [12 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 103.98ms Time] [2021-08-30 16:35:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-30 16:35:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-08-30 16:35:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:35:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-30 16:35:05,215 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2021-08-30 16:35:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:05,215 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-30 16:35:05,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 11 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-30 16:35:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 16:35:05,216 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:05,217 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:05,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 16:35:05,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-30 16:35:05,433 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:05,434 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2021-08-30 16:35:05,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:05,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444737307] [2021-08-30 16:35:05,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:05,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:05,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:05,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444737307] [2021-08-30 16:35:05,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444737307] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:35:05,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316614194] [2021-08-30 16:35:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:05,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:35:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:35:05,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:35:05,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 16:35:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:05,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-30 16:35:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:35:05,843 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 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 16:35:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:06,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:35:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:06,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316614194] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:35:06,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:35:06,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2021-08-30 16:35:06,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477517192] [2021-08-30 16:35:06,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-30 16:35:06,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-30 16:35:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2021-08-30 16:35:06,535 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 29 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:07,024 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-08-30 16:35:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 16:35:07,025 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-30 16:35:07,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:07,026 INFO L225 Difference]: With dead ends: 40 [2021-08-30 16:35:07,026 INFO L226 Difference]: Without dead ends: 40 [2021-08-30 16:35:07,027 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 722.33ms TimeCoverageRelationStatistics Valid=194, Invalid=1288, Unknown=0, NotChecked=0, Total=1482 [2021-08-30 16:35:07,028 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.42ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:07,028 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 51 Invalid, 381 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [36 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 204.42ms Time] [2021-08-30 16:35:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-30 16:35:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-08-30 16:35:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:35:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-08-30 16:35:07,034 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2021-08-30 16:35:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-08-30 16:35:07,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-08-30 16:35:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 16:35:07,035 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:07,035 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:07,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 16:35:07,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-30 16:35:07,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:07,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2021-08-30 16:35:07,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:07,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416813516] [2021-08-30 16:35:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:07,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-08-30 16:35:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-30 16:35:07,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:07,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416813516] [2021-08-30 16:35:07,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416813516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:35:07,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:35:07,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:35:07,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033936869] [2021-08-30 16:35:07,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:35:07,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:35:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:35:07,331 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:07,388 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-08-30 16:35:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:35:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-08-30 16:35:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:07,390 INFO L225 Difference]: With dead ends: 38 [2021-08-30 16:35:07,390 INFO L226 Difference]: Without dead ends: 23 [2021-08-30 16:35:07,390 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.54ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:35:07,391 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.52ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:07,391 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 6 Invalid, 62 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 34.52ms Time] [2021-08-30 16:35:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-30 16:35:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-30 16:35:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-08-30 16:35:07,394 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2021-08-30 16:35:07,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:07,395 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-08-30 16:35:07,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:35:07,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-08-30 16:35:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 16:35:07,396 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:35:07,396 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:35:07,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 16:35:07,396 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 16:35:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:35:07,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2021-08-30 16:35:07,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:35:07,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107320440] [2021-08-30 16:35:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:35:07,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:35:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:35:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:35:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:07,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:35:07,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107320440] [2021-08-30 16:35:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107320440] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:35:07,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457861144] [2021-08-30 16:35:07,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 16:35:07,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:35:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:35:07,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:35:07,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 16:35:07,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 16:35:07,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 16:35:07,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2021-08-30 16:35:07,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:35:07,858 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 0 case distinctions, treesize of input 10 treesize of output 9 [2021-08-30 16:35:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:08,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:35:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:35:08,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457861144] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:35:08,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:35:08,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2021-08-30 16:35:08,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099985498] [2021-08-30 16:35:08,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-30 16:35:08,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:35:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-30 16:35:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2021-08-30 16:35:08,919 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 36 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:35:09,738 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-08-30 16:35:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 16:35:09,739 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-30 16:35:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:35:09,739 INFO L225 Difference]: With dead ends: 27 [2021-08-30 16:35:09,739 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 16:35:09,740 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1247.19ms TimeCoverageRelationStatistics Valid=313, Invalid=2137, Unknown=0, NotChecked=0, Total=2450 [2021-08-30 16:35:09,741 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 237.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.54ms IncrementalHoareTripleChecker+Time [2021-08-30 16:35:09,741 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 54 Invalid, 388 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [53 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 269.54ms Time] [2021-08-30 16:35:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 16:35:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 16:35:09,742 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) [2021-08-30 16:35:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 16:35:09,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-08-30 16:35:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:35:09,742 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 16:35:09,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 4 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:35:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 16:35:09,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 16:35:09,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-08-30 16:35:09,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-08-30 16:35:09,745 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-08-30 16:35:09,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 16:35:09,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:35:09,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:35:09,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:35:09 BoogieIcfgContainer [2021-08-30 16:35:09,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:35:09,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:35:09,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:35:09,955 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:35:09,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:35:02" (3/4) ... [2021-08-30 16:35:09,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 16:35:09,963 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 16:35:09,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-30 16:35:09,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-30 16:35:09,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-30 16:35:09,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-30 16:35:09,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2021-08-30 16:35:09,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 16:35:09,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-30 16:35:09,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-30 16:35:09,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-30 16:35:09,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:35:09,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:35:09,993 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:35:09,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:35:09,994 INFO L158 Benchmark]: Toolchain (without parser) took 8320.32ms. Allocated memory was 54.5MB in the beginning and 104.9MB in the end (delta: 50.3MB). Free memory was 32.5MB in the beginning and 43.8MB in the end (delta: -11.3MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,994 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:35:09,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.85ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 45.7MB in the end (delta: -13.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,995 INFO L158 Benchmark]: Boogie Preprocessor took 65.13ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 43.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,995 INFO L158 Benchmark]: RCFGBuilder took 419.93ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 42.5MB in the end (delta: 794.2kB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,995 INFO L158 Benchmark]: TraceAbstraction took 7409.09ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 42.1MB in the beginning and 46.8MB in the end (delta: -4.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,995 INFO L158 Benchmark]: Witness Printer took 38.55ms. Allocated memory is still 104.9MB. Free memory was 46.8MB in the beginning and 43.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:35:09,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.85ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 45.7MB in the end (delta: -13.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.13ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 43.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 419.93ms. Allocated memory is still 67.1MB. Free memory was 43.3MB in the beginning and 42.5MB in the end (delta: 794.2kB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7409.09ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 42.1MB in the beginning and 46.8MB in the end (delta: -4.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 38.55ms. Allocated memory is still 104.9MB. Free memory was 46.8MB in the beginning and 43.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: 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 9 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7357.18ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 20.11ms, AutomataDifference: 2415.23ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 15.71ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 326 SdHoareTripleChecker+Valid, 1013.39ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 323 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 858.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 351 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1403 IncrementalHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 42 mSDtfsCounter, 1403 mSolverCounterSat, 23.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 2653.65ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 41.96ms AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.56ms SsaConstructionTime, 209.68ms SatisfiabilityAnalysisTime, 3515.06ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 1774 SizeOfPredicates, 30 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 7/50 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 16:35:10,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...