./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/strreplace-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/strreplace-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 50bdaf600d03af0a677a59daf6a875dbe69c10b2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:48:59,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:48:59,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:48:59,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:48:59,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:48:59,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:48:59,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:48:59,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:48:59,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:48:59,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:48:59,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:48:59,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:48:59,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:48:59,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:48:59,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:48:59,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:48:59,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:48:59,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:48:59,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:48:59,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:48:59,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:48:59,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:48:59,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:48:59,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:48:59,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:48:59,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:48:59,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:48:59,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:48:59,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:48:59,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:48:59,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:48:59,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:48:59,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:48:59,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:48:59,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:48:59,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:48:59,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:48:59,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:48:59,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:48:59,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:48:59,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:48:59,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 16:48:59,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:48:59,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:48:59,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:48:59,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:48:59,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:48:59,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:48:59,374 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:48:59,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:48:59,375 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:48:59,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:48:59,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:48:59,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:48:59,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:48:59,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:48:59,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:48:59,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 16:48:59,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:48:59,377 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:48:59,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:48:59,378 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:48:59,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:48:59,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:48:59,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:48:59,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:48:59,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:48:59,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:48:59,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:48:59,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:48:59,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:48:59,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50bdaf600d03af0a677a59daf6a875dbe69c10b2 [2021-08-30 16:48:59,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:48:59,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:48:59,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:48:59,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:48:59,675 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:48:59,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2021-08-30 16:48:59,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb4cf676/9e7e8c3eea2645b38c7a6fbae5cd38c0/FLAGaba8d73b3 [2021-08-30 16:49:00,258 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:49:00,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/strreplace-alloca-2.i [2021-08-30 16:49:00,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb4cf676/9e7e8c3eea2645b38c7a6fbae5cd38c0/FLAGaba8d73b3 [2021-08-30 16:49:00,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb4cf676/9e7e8c3eea2645b38c7a6fbae5cd38c0 [2021-08-30 16:49:00,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:49:00,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:49:00,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:49:00,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:49:00,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:49:00,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:49:00" (1/1) ... [2021-08-30 16:49:00,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7699c1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:00, skipping insertion in model container [2021-08-30 16:49:00,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:49:00" (1/1) ... [2021-08-30 16:49:00,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:49:00,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:49:01,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:49:01,025 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:49:01,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:49:01,093 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:49:01,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01 WrapperNode [2021-08-30 16:49:01,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:49:01,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:49:01,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:49:01,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:49:01,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:49:01,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:49:01,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:49:01,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:49:01,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (1/1) ... [2021-08-30 16:49:01,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:49:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:49:01,167 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 16:49:01,179 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 16:49:01,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:49:01,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:49:01,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 16:49:01,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 16:49:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 16:49:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 16:49:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 16:49:01,209 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2021-08-30 16:49:01,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:49:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:49:01,209 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:49:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:49:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:49:01,210 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:49:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 16:49:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 16:49:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 16:49:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 16:49:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 16:49:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:49:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:49:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:49:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:49:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:49:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:49:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:49:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:49:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:49:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:49:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:49:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:49:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:49:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:49:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:49:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:49:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:49:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:49:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:49:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:49:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:49:01,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:49:01,597 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-30 16:49:01,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:49:01 BoogieIcfgContainer [2021-08-30 16:49:01,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:49:01,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:49:01,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:49:01,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:49:01,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:49:00" (1/3) ... [2021-08-30 16:49:01,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241ea092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:49:01, skipping insertion in model container [2021-08-30 16:49:01,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:49:01" (2/3) ... [2021-08-30 16:49:01,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241ea092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:49:01, skipping insertion in model container [2021-08-30 16:49:01,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:49:01" (3/3) ... [2021-08-30 16:49:01,612 INFO L111 eAbstractionObserver]: Analyzing ICFG strreplace-alloca-2.i [2021-08-30 16:49:01,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:49:01,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-30 16:49:01,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:49:01,682 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 16:49:01,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-30 16:49:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 35 states have internal predecessors, (41), 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 16:49:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:49:01,710 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:01,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:01,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash -610270170, now seen corresponding path program 1 times [2021-08-30 16:49:01,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:01,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627792909] [2021-08-30 16:49:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:01,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:01,975 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 16:49:01,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:01,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627792909] [2021-08-30 16:49:01,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627792909] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:01,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:01,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:49:01,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487392570] [2021-08-30 16:49:01,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:49:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:49:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:49:02,014 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 35 states have internal predecessors, (41), 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 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:49:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:02,158 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-08-30 16:49:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:49:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:49:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:02,168 INFO L225 Difference]: With dead ends: 40 [2021-08-30 16:49:02,168 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 16:49:02,171 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.76ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:49:02,174 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.81ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:02,175 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 9 Invalid, 88 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 110.81ms Time] [2021-08-30 16:49:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 16:49:02,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 16:49:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 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 16:49:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-08-30 16:49:02,205 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 10 [2021-08-30 16:49:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:02,206 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-08-30 16:49:02,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:49:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-08-30 16:49:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:49:02,207 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:02,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:02,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:49:02,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -610270169, now seen corresponding path program 1 times [2021-08-30 16:49:02,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:02,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66941339] [2021-08-30 16:49:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:02,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,307 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 16:49:02,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:02,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66941339] [2021-08-30 16:49:02,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66941339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:02,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:02,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:49:02,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446271655] [2021-08-30 16:49:02,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:49:02,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:02,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:49:02,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:49:02,319 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 5 states, 4 states have (on average 1.75) 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 16:49:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:02,403 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-08-30 16:49:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:49:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) 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 16:49:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:02,405 INFO L225 Difference]: With dead ends: 36 [2021-08-30 16:49:02,405 INFO L226 Difference]: Without dead ends: 36 [2021-08-30 16:49:02,405 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.77ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:49:02,406 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.42ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:02,407 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 13 Invalid, 97 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 64.42ms Time] [2021-08-30 16:49:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-30 16:49:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-30 16:49:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 30 states have internal predecessors, (34), 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 16:49:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-08-30 16:49:02,411 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 10 [2021-08-30 16:49:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:02,412 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-08-30 16:49:02,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) 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 16:49:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-08-30 16:49:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:49:02,412 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:02,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:02,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:49:02,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:02,413 INFO L82 PathProgramCache]: Analyzing trace with hash -610270116, now seen corresponding path program 1 times [2021-08-30 16:49:02,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:02,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531886148] [2021-08-30 16:49:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:02,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,459 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 16:49:02,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:02,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531886148] [2021-08-30 16:49:02,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531886148] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:02,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:02,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:49:02,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090658884] [2021-08-30 16:49:02,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 16:49:02,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 16:49:02,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:49:02,461 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. 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 16:49:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:02,530 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-08-30 16:49:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:49:02,531 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 16:49:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:02,533 INFO L225 Difference]: With dead ends: 44 [2021-08-30 16:49:02,533 INFO L226 Difference]: Without dead ends: 44 [2021-08-30 16:49:02,533 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.73ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:49:02,534 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 31 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.19ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:02,535 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 12 Invalid, 92 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 56.19ms Time] [2021-08-30 16:49:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-30 16:49:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-08-30 16:49:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.44) internal successors, (36), 32 states have internal predecessors, (36), 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 16:49:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-08-30 16:49:02,542 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2021-08-30 16:49:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:02,542 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-08-30 16:49:02,542 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 16:49:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-08-30 16:49:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 16:49:02,543 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:02,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:02,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:49:02,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -610210534, now seen corresponding path program 1 times [2021-08-30 16:49:02,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:02,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138632940] [2021-08-30 16:49:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:02,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,627 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 16:49:02,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:02,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138632940] [2021-08-30 16:49:02,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138632940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:02,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:02,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:49:02,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135328906] [2021-08-30 16:49:02,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:49:02,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:02,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:49:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:49:02,631 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 16:49:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:02,740 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-08-30 16:49:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:49:02,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 16:49:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:02,743 INFO L225 Difference]: With dead ends: 48 [2021-08-30 16:49:02,743 INFO L226 Difference]: Without dead ends: 48 [2021-08-30 16:49:02,745 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.63ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:49:02,750 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.46ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:02,751 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 15 Invalid, 113 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 81.46ms Time] [2021-08-30 16:49:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-30 16:49:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2021-08-30 16:49:02,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 34 states have internal predecessors, (39), 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 16:49:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-08-30 16:49:02,755 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 10 [2021-08-30 16:49:02,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:02,755 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-08-30 16:49:02,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 16:49:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-08-30 16:49:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:49:02,756 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:02,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:02,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:49:02,757 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting cstrreplaceErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:02,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041719, now seen corresponding path program 1 times [2021-08-30 16:49:02,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:02,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922233188] [2021-08-30 16:49:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:02,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:02,811 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 16:49:02,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:02,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922233188] [2021-08-30 16:49:02,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922233188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:02,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:02,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:49:02,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457372343] [2021-08-30 16:49:02,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:49:02,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:49:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:49:02,814 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 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 16:49:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:02,910 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-08-30 16:49:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:49:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 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 16:49:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:02,912 INFO L225 Difference]: With dead ends: 37 [2021-08-30 16:49:02,912 INFO L226 Difference]: Without dead ends: 37 [2021-08-30 16:49:02,912 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.18ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:49:02,918 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.77ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:02,919 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 14 Invalid, 112 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 70.77ms Time] [2021-08-30 16:49:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-30 16:49:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-30 16:49:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 31 states have internal predecessors, (36), 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 16:49:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-30 16:49:02,930 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2021-08-30 16:49:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:02,930 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-30 16:49:02,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 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 16:49:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-30 16:49:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:49:02,932 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:02,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:02,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 16:49:02,932 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cstrreplaceErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1176041720, now seen corresponding path program 1 times [2021-08-30 16:49:02,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:02,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424030161] [2021-08-30 16:49:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:02,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:03,084 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 16:49:03,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:03,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424030161] [2021-08-30 16:49:03,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424030161] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:03,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:03,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 16:49:03,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508538744] [2021-08-30 16:49:03,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 16:49:03,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 16:49:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:49:03,086 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) 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 16:49:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:03,235 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-08-30 16:49:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:49:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) 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 16:49:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:03,244 INFO L225 Difference]: With dead ends: 47 [2021-08-30 16:49:03,244 INFO L226 Difference]: Without dead ends: 47 [2021-08-30 16:49:03,244 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 62.18ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:49:03,245 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 74 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.80ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:03,246 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 21 Invalid, 164 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [9 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 107.80ms Time] [2021-08-30 16:49:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-30 16:49:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2021-08-30 16:49:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.34375) internal successors, (43), 36 states have internal predecessors, (43), 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 16:49:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-08-30 16:49:03,249 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 14 [2021-08-30 16:49:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:03,249 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-08-30 16:49:03,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) 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 16:49:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-08-30 16:49:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:49:03,250 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:03,250 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:03,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 16:49:03,250 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:03,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:03,250 INFO L82 PathProgramCache]: Analyzing trace with hash 415323869, now seen corresponding path program 1 times [2021-08-30 16:49:03,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:03,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533052730] [2021-08-30 16:49:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:03,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:03,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:03,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533052730] [2021-08-30 16:49:03,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533052730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:49:03,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169285213] [2021-08-30 16:49:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:03,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:49:03,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:49:03,320 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 16:49:03,340 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 16:49:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:03,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 16:49:03,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:49:03,524 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 6 treesize of output 5 [2021-08-30 16:49:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:03,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:49:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:03,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169285213] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:49:03,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:49:03,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-08-30 16:49:03,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790343963] [2021-08-30 16:49:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 16:49:03,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 16:49:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:49:03,861 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 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 16:49:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:04,039 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-08-30 16:49:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:49:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 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 16:49:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:04,040 INFO L225 Difference]: With dead ends: 56 [2021-08-30 16:49:04,040 INFO L226 Difference]: Without dead ends: 56 [2021-08-30 16:49:04,040 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 121.79ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:49:04,041 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.57ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:04,041 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 19 Invalid, 213 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [17 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 129.57ms Time] [2021-08-30 16:49:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-30 16:49:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 39. [2021-08-30 16:49:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 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 16:49:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-08-30 16:49:04,044 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 14 [2021-08-30 16:49:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:04,044 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-08-30 16:49:04,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 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 16:49:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-08-30 16:49:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 16:49:04,045 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:04,045 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:04,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-30 16:49:04,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:49:04,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting cstrreplaceErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1580673573, now seen corresponding path program 1 times [2021-08-30 16:49:04,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:04,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694357411] [2021-08-30 16:49:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:04,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:04,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:04,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694357411] [2021-08-30 16:49:04,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694357411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:04,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:04,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 16:49:04,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562441323] [2021-08-30 16:49:04,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:49:04,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:49:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:49:04,349 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 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 16:49:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:04,523 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-08-30 16:49:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 16:49:04,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 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 19 [2021-08-30 16:49:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:04,524 INFO L225 Difference]: With dead ends: 51 [2021-08-30 16:49:04,524 INFO L226 Difference]: Without dead ends: 51 [2021-08-30 16:49:04,525 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 86.57ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-08-30 16:49:04,525 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.74ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:04,526 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 28 Invalid, 211 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 111.74ms Time] [2021-08-30 16:49:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-08-30 16:49:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-08-30 16:49:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 41 states have internal predecessors, (46), 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 16:49:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-08-30 16:49:04,529 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 19 [2021-08-30 16:49:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:04,529 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-08-30 16:49:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 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 16:49:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-08-30 16:49:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 16:49:04,530 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:04,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:04,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 16:49:04,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cstrreplaceErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2127487709, now seen corresponding path program 1 times [2021-08-30 16:49:04,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:04,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263283018] [2021-08-30 16:49:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:04,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:04,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:04,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263283018] [2021-08-30 16:49:04,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263283018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:04,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:04,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 16:49:04,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067936955] [2021-08-30 16:49:04,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 16:49:04,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 16:49:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-30 16:49:04,687 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 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 16:49:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:04,897 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-08-30 16:49:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 16:49:04,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 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 19 [2021-08-30 16:49:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:04,898 INFO L225 Difference]: With dead ends: 64 [2021-08-30 16:49:04,899 INFO L226 Difference]: Without dead ends: 64 [2021-08-30 16:49:04,899 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 105.69ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-08-30 16:49:04,899 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.14ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.60ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:04,900 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 35 Invalid, 262 Unknown, 0 Unchecked, 3.14ms Time], IncrementalHoareTripleChecker [12 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 129.60ms Time] [2021-08-30 16:49:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-30 16:49:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2021-08-30 16:49:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 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 16:49:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2021-08-30 16:49:04,903 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2021-08-30 16:49:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:04,903 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2021-08-30 16:49:04,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 8 states have internal predecessors, (15), 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 16:49:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2021-08-30 16:49:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 16:49:04,908 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:04,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:04,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 16:49:04,909 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:04,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1797581199, now seen corresponding path program 1 times [2021-08-30 16:49:04,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:04,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564836902] [2021-08-30 16:49:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:04,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-08-30 16:49:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:04,960 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 16:49:04,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:04,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564836902] [2021-08-30 16:49:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564836902] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:49:04,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:49:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 16:49:04,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520627840] [2021-08-30 16:49:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 16:49:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 16:49:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-30 16:49:04,961 INFO L87 Difference]: Start difference. First operand 49 states and 55 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 16:49:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:05,046 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-30 16:49:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:49:05,046 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 20 [2021-08-30 16:49:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:05,047 INFO L225 Difference]: With dead ends: 61 [2021-08-30 16:49:05,047 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 16:49:05,047 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.42ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 16:49:05,047 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 82 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.84ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:05,048 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 6 Invalid, 101 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [12 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 69.84ms Time] [2021-08-30 16:49:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 16:49:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2021-08-30 16:49:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 27 states have internal predecessors, (31), 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 16:49:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-08-30 16:49:05,050 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2021-08-30 16:49:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:05,050 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-08-30 16:49:05,050 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 16:49:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-08-30 16:49:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 16:49:05,051 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:05,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:05,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 16:49:05,051 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting cstrreplaceErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash 956679290, now seen corresponding path program 1 times [2021-08-30 16:49:05,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:05,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259220517] [2021-08-30 16:49:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:05,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:05,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259220517] [2021-08-30 16:49:05,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259220517] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:49:05,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165150173] [2021-08-30 16:49:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:05,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:49:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:49:05,169 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 16:49:05,175 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 16:49:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:05,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-30 16:49:05,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:49:05,288 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 6 treesize of output 5 [2021-08-30 16:49:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:05,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:49:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:05,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165150173] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:49:05,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:49:05,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2021-08-30 16:49:05,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668306094] [2021-08-30 16:49:05,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-30 16:49:05,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-30 16:49:05,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-08-30 16:49:05,679 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 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 16:49:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:05,872 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-08-30 16:49:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 16:49:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 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 23 [2021-08-30 16:49:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:05,873 INFO L225 Difference]: With dead ends: 42 [2021-08-30 16:49:05,873 INFO L226 Difference]: Without dead ends: 42 [2021-08-30 16:49:05,874 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 254.96ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-08-30 16:49:05,874 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 142 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.46ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:05,874 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 23 Invalid, 203 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [27 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 114.46ms Time] [2021-08-30 16:49:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-30 16:49:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-08-30 16:49:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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 16:49:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-08-30 16:49:05,877 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2021-08-30 16:49:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:05,877 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-08-30 16:49:05,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 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 16:49:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-08-30 16:49:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 16:49:05,878 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:49:05,878 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:49:05,897 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 16:49:06,092 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,SelfDestructingSolverStorable10 [2021-08-30 16:49:06,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting cstrreplaceErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 6 more)] === [2021-08-30 16:49:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:49:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash -403117159, now seen corresponding path program 2 times [2021-08-30 16:49:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:49:06,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741933616] [2021-08-30 16:49:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:49:06,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:49:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:49:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:49:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:49:06,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:49:06,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741933616] [2021-08-30 16:49:06,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741933616] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:49:06,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507065811] [2021-08-30 16:49:06,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 16:49:06,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:49:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:49:06,329 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 16:49:06,337 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 16:49:06,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 16:49:06,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 16:49:06,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-30 16:49:06,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:49:06,442 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 6 treesize of output 5 [2021-08-30 16:49:06,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-08-30 16:49:06,617 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 16:49:06,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-08-30 16:49:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:49:06,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:49:07,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-08-30 16:49:07,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-08-30 16:49:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:49:07,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507065811] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:49:07,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:49:07,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2021-08-30 16:49:07,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007821214] [2021-08-30 16:49:07,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-30 16:49:07,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:49:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-30 16:49:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2021-08-30 16:49:07,382 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 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 16:49:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:49:08,303 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-08-30 16:49:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-30 16:49:08,304 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 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 28 [2021-08-30 16:49:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:49:08,304 INFO L225 Difference]: With dead ends: 58 [2021-08-30 16:49:08,304 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 16:49:08,305 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1103.59ms TimeCoverageRelationStatistics Valid=352, Invalid=2300, Unknown=0, NotChecked=0, Total=2652 [2021-08-30 16:49:08,306 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 269.37ms IncrementalHoareTripleChecker+Time [2021-08-30 16:49:08,306 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 52 Invalid, 627 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [43 Valid, 450 Invalid, 0 Unknown, 134 Unchecked, 269.37ms Time] [2021-08-30 16:49:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 16:49:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 16:49:08,307 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 16:49:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 16:49:08,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-08-30 16:49:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:49:08,307 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 16:49:08,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 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 16:49:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 16:49:08,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 16:49:08,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (10 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (9 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION (8 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION (7 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr0REQUIRES_VIOLATION (5 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr1REQUIRES_VIOLATION (4 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr2REQUIRES_VIOLATION (3 of 11 remaining) [2021-08-30 16:49:08,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr3REQUIRES_VIOLATION (2 of 11 remaining) [2021-08-30 16:49:08,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr4REQUIRES_VIOLATION (1 of 11 remaining) [2021-08-30 16:49:08,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cstrreplaceErr5REQUIRES_VIOLATION (0 of 11 remaining) [2021-08-30 16:49:08,337 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 16:49:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:49:08,528 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:49:08,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:49:08 BoogieIcfgContainer [2021-08-30 16:49:08,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:49:08,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:49:08,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:49:08,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:49:08,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:49:01" (3/4) ... [2021-08-30 16:49:08,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-30 16:49:08,539 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-30 16:49:08,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-30 16:49:08,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-30 16:49:08,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:49:08,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 16:49:08,578 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:49:08,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:49:08,579 INFO L158 Benchmark]: Toolchain (without parser) took 7848.70ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 40.6MB in the beginning and 43.2MB in the end (delta: -2.5MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,579 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 29.2MB in the beginning and 29.2MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:49:08,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.79ms. Allocated memory is still 56.6MB. Free memory was 40.5MB in the beginning and 35.0MB in the end (delta: 5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,580 INFO L158 Benchmark]: Boogie Preprocessor took 44.51ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 32.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,580 INFO L158 Benchmark]: RCFGBuilder took 462.40ms. Allocated memory is still 56.6MB. Free memory was 32.7MB in the beginning and 26.6MB in the end (delta: 6.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,581 INFO L158 Benchmark]: TraceAbstraction took 6926.05ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 26.1MB in the beginning and 46.6MB in the end (delta: -20.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,581 INFO L158 Benchmark]: Witness Printer took 47.73ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 43.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:49:08,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 29.2MB in the beginning and 29.2MB in the end (delta: 33.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.79ms. Allocated memory is still 56.6MB. Free memory was 40.5MB in the beginning and 35.0MB in the end (delta: 5.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.51ms. Allocated memory is still 56.6MB. Free memory was 35.0MB in the beginning and 32.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 462.40ms. Allocated memory is still 56.6MB. Free memory was 32.7MB in the beginning and 26.6MB in the end (delta: 6.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6926.05ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 26.1MB in the beginning and 46.6MB in the end (delta: -20.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Witness Printer took 47.73ms. Allocated memory is still 83.9MB. Free memory was 46.6MB in the beginning and 43.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. 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: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 538]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 57 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 6856.12ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 25.31ms, AutomataDifference: 2531.91ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.20ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 775 SdHoareTripleChecker+Valid, 1316.03ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 765 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 1058.00ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 134 IncrementalHoareTripleChecker+Unchecked, 415 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1989 IncrementalHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 61 mSDtfsCounter, 1989 mSolverCounterSat, 32.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 1882.26ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=9, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 58.07ms AutomataMinimizationTime, 12 MinimizatonAttempts, 73 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.85ms SsaConstructionTime, 188.95ms SatisfiabilityAnalysisTime, 2885.82ms InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 303 ConstructedInterpolants, 8 QuantifiedInterpolants, 2340 SizeOfPredicates, 22 NumberOfNonLiveVariables, 302 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 12/38 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-30 16:49:08,617 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...