./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/memory-alloca/c.03-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 ab87ef7cc863b18816ae397a50b6c6e9fb3e753d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:01:02,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:01:02,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:01:02,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:01:02,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:01:02,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:01:02,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:01:02,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:01:02,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:01:02,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:01:02,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:01:02,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:01:02,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:01:02,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:01:02,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:01:02,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:01:02,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:01:02,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:01:02,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:01:02,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:01:02,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:01:02,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:01:02,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:01:02,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:01:02,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:01:02,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:01:02,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:01:02,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:01:02,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:01:02,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:01:02,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:01:02,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:01:02,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:01:02,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:01:02,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:01:02,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:01:02,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:01:02,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:01:02,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:01:02,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:01:02,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:01:02,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:01:02,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:01:02,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:01:02,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:01:02,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:01:02,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:01:02,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:01:02,291 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:01:02,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:01:02,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:01:02,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:01:02,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:01:02,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:01:02,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:01:02,293 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:01:02,293 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:01:02,294 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:01:02,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:01:02,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:01:02,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:01:02,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:01:02,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:01:02,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:01:02,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:01:02,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:01:02,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:01:02,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:01:02,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:01:02,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:01:02,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:01:02,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab87ef7cc863b18816ae397a50b6c6e9fb3e753d [2021-08-27 06:01:02,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:01:02,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:01:02,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:01:02,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:01:02,622 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:01:02,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2021-08-27 06:01:02,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5884594/ef8163cedef8494badfde8a93d6af8b8/FLAGa89f880d9 [2021-08-27 06:01:03,249 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:01:03,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2021-08-27 06:01:03,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5884594/ef8163cedef8494badfde8a93d6af8b8/FLAGa89f880d9 [2021-08-27 06:01:03,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5884594/ef8163cedef8494badfde8a93d6af8b8 [2021-08-27 06:01:03,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:01:03,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:01:03,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:01:03,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:01:03,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:01:03,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f5cc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03, skipping insertion in model container [2021-08-27 06:01:03,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:01:03,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:01:03,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:01:03,859 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:01:03,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:01:03,929 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:01:03,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03 WrapperNode [2021-08-27 06:01:03,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:01:03,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:01:03,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:01:03,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:01:03,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:03,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:01:03,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:01:03,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:01:03,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:01:03,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (1/1) ... [2021-08-27 06:01:04,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:01:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:01:04,030 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) [2021-08-27 06:01:04,063 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 [2021-08-27 06:01:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:01:04,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2021-08-27 06:01:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:01:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:01:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:01:04,086 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:01:04,087 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:01:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:01:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:01:04,090 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:01:04,091 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:01:04,092 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:01:04,093 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:01:04,094 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:01:04,095 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:01:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:01:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:01:04,098 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:01:04,099 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:01:04,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:01:04,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:01:04,725 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 06:01:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:04 BoogieIcfgContainer [2021-08-27 06:01:04,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:01:04,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:01:04,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:01:04,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:01:04,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:01:03" (1/3) ... [2021-08-27 06:01:04,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:04, skipping insertion in model container [2021-08-27 06:01:04,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:01:03" (2/3) ... [2021-08-27 06:01:04,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6772f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:01:04, skipping insertion in model container [2021-08-27 06:01:04,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:04" (3/3) ... [2021-08-27 06:01:04,741 INFO L111 eAbstractionObserver]: Analyzing ICFG c.03-alloca-2.i [2021-08-27 06:01:04,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:01:04,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-08-27 06:01:04,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:01:04,801 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 [2021-08-27 06:01:04,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-08-27 06:01:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 60 states have internal predecessors, (63), 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) [2021-08-27 06:01:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 06:01:04,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:04,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:04,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting test_funErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:04,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:04,830 INFO L82 PathProgramCache]: Analyzing trace with hash 743499951, now seen corresponding path program 1 times [2021-08-27 06:01:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:04,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25065791] [2021-08-27 06:01:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:04,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:05,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:05,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25065791] [2021-08-27 06:01:05,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25065791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:05,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:05,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:05,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150648416] [2021-08-27 06:01:05,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:05,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,098 INFO L87 Difference]: Start difference. First operand has 67 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 60 states have internal predecessors, (63), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 06:01:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:05,277 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-08-27 06:01:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 9 [2021-08-27 06:01:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:05,287 INFO L225 Difference]: With dead ends: 62 [2021-08-27 06:01:05,287 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 06:01:05,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 06:01:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-08-27 06:01:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 53 states have internal predecessors, (55), 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) [2021-08-27 06:01:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-08-27 06:01:05,325 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 9 [2021-08-27 06:01:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:05,326 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-08-27 06:01:05,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 06:01:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-08-27 06:01:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 06:01:05,328 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:05,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:05,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:01:05,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:05,329 INFO L82 PathProgramCache]: Analyzing trace with hash 743499952, now seen corresponding path program 1 times [2021-08-27 06:01:05,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:05,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746233412] [2021-08-27 06:01:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:05,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:05,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:05,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746233412] [2021-08-27 06:01:05,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746233412] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:05,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:05,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:05,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343208995] [2021-08-27 06:01:05,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:05,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:05,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,462 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 06:01:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:05,601 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-08-27 06:01:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:05,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 9 [2021-08-27 06:01:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:05,602 INFO L225 Difference]: With dead ends: 54 [2021-08-27 06:01:05,602 INFO L226 Difference]: Without dead ends: 54 [2021-08-27 06:01:05,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-27 06:01:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-27 06:01:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 48 states have internal predecessors, (50), 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) [2021-08-27 06:01:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-08-27 06:01:05,611 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 9 [2021-08-27 06:01:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:05,611 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-08-27 06:01:05,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-08-27 06:01:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-08-27 06:01:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:01:05,613 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:05,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:05,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:01:05,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting test_funErr2REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:05,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1573661992, now seen corresponding path program 1 times [2021-08-27 06:01:05,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:05,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018797565] [2021-08-27 06:01:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:05,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:05,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:05,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018797565] [2021-08-27 06:01:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018797565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:05,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:05,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:05,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342524138] [2021-08-27 06:01:05,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:05,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,718 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 06:01:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:05,836 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-08-27 06:01:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:05,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10 [2021-08-27 06:01:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:05,838 INFO L225 Difference]: With dead ends: 52 [2021-08-27 06:01:05,838 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 06:01:05,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 06:01:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-08-27 06:01:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 46 states have internal predecessors, (48), 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) [2021-08-27 06:01:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-08-27 06:01:05,843 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 10 [2021-08-27 06:01:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:05,843 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-08-27 06:01:05,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 06:01:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-08-27 06:01:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:01:05,844 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:05,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:05,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:01:05,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting test_funErr3REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1573661993, now seen corresponding path program 1 times [2021-08-27 06:01:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:05,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826065432] [2021-08-27 06:01:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:05,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:05,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:05,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826065432] [2021-08-27 06:01:05,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826065432] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:05,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:05,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:05,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057613861] [2021-08-27 06:01:05,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:05,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,897 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 06:01:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:05,969 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-08-27 06:01:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10 [2021-08-27 06:01:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:05,970 INFO L225 Difference]: With dead ends: 50 [2021-08-27 06:01:05,971 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 06:01:05,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 06:01:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-08-27 06:01:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 44 states have internal predecessors, (46), 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) [2021-08-27 06:01:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-08-27 06:01:05,975 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 10 [2021-08-27 06:01:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:05,976 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-08-27 06:01:05,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-08-27 06:01:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-08-27 06:01:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:01:05,977 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:05,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:05,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 06:01:05,977 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting test_funErr4REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:05,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1538881490, now seen corresponding path program 1 times [2021-08-27 06:01:05,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:05,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013691545] [2021-08-27 06:01:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:05,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:06,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013691545] [2021-08-27 06:01:06,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013691545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:06,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:06,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:06,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176270111] [2021-08-27 06:01:06,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:06,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,035 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. 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, (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) [2021-08-27 06:01:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:06,114 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2021-08-27 06:01:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:06,115 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, (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 11 [2021-08-27 06:01:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:06,117 INFO L225 Difference]: With dead ends: 46 [2021-08-27 06:01:06,117 INFO L226 Difference]: Without dead ends: 46 [2021-08-27 06:01:06,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-27 06:01:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-27 06:01:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.5) internal successors, (42), 40 states have internal predecessors, (42), 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) [2021-08-27 06:01:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-08-27 06:01:06,134 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 11 [2021-08-27 06:01:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:06,134 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-08-27 06:01:06,134 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, (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) [2021-08-27 06:01:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-08-27 06:01:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:01:06,136 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:06,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:06,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 06:01:06,136 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting test_funErr5REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:06,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1538881491, now seen corresponding path program 1 times [2021-08-27 06:01:06,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:06,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443833469] [2021-08-27 06:01:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:06,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:06,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:06,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443833469] [2021-08-27 06:01:06,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443833469] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:06,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:06,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:06,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401591200] [2021-08-27 06:01:06,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:06,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:06,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:06,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,191 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. 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, (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) [2021-08-27 06:01:06,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:06,266 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-08-27 06:01:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:06,266 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, (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 11 [2021-08-27 06:01:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:06,267 INFO L225 Difference]: With dead ends: 42 [2021-08-27 06:01:06,267 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 06:01:06,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 06:01:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-08-27 06:01:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 36 states have internal predecessors, (38), 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) [2021-08-27 06:01:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-08-27 06:01:06,270 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 11 [2021-08-27 06:01:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:06,271 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-08-27 06:01:06,271 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, (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) [2021-08-27 06:01:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-08-27 06:01:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:01:06,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:06,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:06,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 06:01:06,272 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting test_funErr6REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash 460685931, now seen corresponding path program 1 times [2021-08-27 06:01:06,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:06,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433838293] [2021-08-27 06:01:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:06,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:06,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:06,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433838293] [2021-08-27 06:01:06,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433838293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:06,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:06,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:06,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808531893] [2021-08-27 06:01:06,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:06,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,321 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-27 06:01:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:06,373 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-08-27 06:01:06,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:06,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2021-08-27 06:01:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:06,375 INFO L225 Difference]: With dead ends: 38 [2021-08-27 06:01:06,375 INFO L226 Difference]: Without dead ends: 38 [2021-08-27 06:01:06,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-27 06:01:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-27 06:01:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 32 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) [2021-08-27 06:01:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-08-27 06:01:06,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 12 [2021-08-27 06:01:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:06,383 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-08-27 06:01:06,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-27 06:01:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-08-27 06:01:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-27 06:01:06,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:06,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:06,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 06:01:06,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting test_funErr7REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 460685932, now seen corresponding path program 1 times [2021-08-27 06:01:06,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:06,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555652270] [2021-08-27 06:01:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:06,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:06,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:06,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555652270] [2021-08-27 06:01:06,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555652270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:06,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:06,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:01:06,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239652420] [2021-08-27 06:01:06,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:01:06,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:01:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,474 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-27 06:01:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:06,538 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-08-27 06:01:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:01:06,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 12 [2021-08-27 06:01:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:06,540 INFO L225 Difference]: With dead ends: 34 [2021-08-27 06:01:06,540 INFO L226 Difference]: Without dead ends: 34 [2021-08-27 06:01:06,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:01:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-27 06:01:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-27 06:01:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-08-27 06:01:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-08-27 06:01:06,552 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 12 [2021-08-27 06:01:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:06,552 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-08-27 06:01:06,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-27 06:01:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-08-27 06:01:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 06:01:06,554 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:01:06,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:01:06,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 06:01:06,554 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION, test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION (and 27 more)] === [2021-08-27 06:01:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:01:06,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1533919015, now seen corresponding path program 1 times [2021-08-27 06:01:06,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:01:06,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556368959] [2021-08-27 06:01:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:01:06,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:01:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:01:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 06:01:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:01:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:01:06,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:01:06,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556368959] [2021-08-27 06:01:06,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556368959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:01:06,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:01:06,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 06:01:06,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069417742] [2021-08-27 06:01:06,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:01:06,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:01:06,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:01:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:01:06,835 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:01:06,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:01:06,902 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-08-27 06:01:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:01:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-08-27 06:01:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:01:06,902 INFO L225 Difference]: With dead ends: 33 [2021-08-27 06:01:06,902 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 06:01:06,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:01:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 06:01:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 06:01:06,906 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) [2021-08-27 06:01:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 06:01:06,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-08-27 06:01:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:01:06,907 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 06:01:06,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:01:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 06:01:06,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 06:01:06,909 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:01:06,910 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr0REQUIRES_VIOLATION [2021-08-27 06:01:06,910 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr1REQUIRES_VIOLATION [2021-08-27 06:01:06,911 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr2REQUIRES_VIOLATION [2021-08-27 06:01:06,911 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr3REQUIRES_VIOLATION [2021-08-27 06:01:06,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr4REQUIRES_VIOLATION [2021-08-27 06:01:06,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr5REQUIRES_VIOLATION [2021-08-27 06:01:06,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr6REQUIRES_VIOLATION [2021-08-27 06:01:06,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr7REQUIRES_VIOLATION [2021-08-27 06:01:06,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr8REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr9REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr10REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr11REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr12REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr13REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr14REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr15REQUIRES_VIOLATION [2021-08-27 06:01:06,913 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr16REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr17REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr18REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr19REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr20REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr21REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr22REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr23REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr24REQUIRES_VIOLATION [2021-08-27 06:01:06,914 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr25REQUIRES_VIOLATION [2021-08-27 06:01:06,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr26REQUIRES_VIOLATION [2021-08-27 06:01:06,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr27REQUIRES_VIOLATION [2021-08-27 06:01:06,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr28REQUIRES_VIOLATION [2021-08-27 06:01:06,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location test_funErr29REQUIRES_VIOLATION [2021-08-27 06:01:06,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 06:01:06,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:01:06,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:01:06 BoogieIcfgContainer [2021-08-27 06:01:06,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:01:06,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:01:06,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:01:06,924 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:01:06,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:01:04" (3/4) ... [2021-08-27 06:01:06,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test_fun [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-08-27 06:01:06,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-08-27 06:01:06,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-27 06:01:06,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-27 06:01:06,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 06:01:06,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 06:01:06,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 06:01:06,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:01:06,985 INFO L168 Benchmark]: Toolchain (without parser) took 3401.59 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 33.9 MB in the beginning and 47.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,985 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:01:06,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.31 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 37.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,985 INFO L168 Benchmark]: Boogie Preprocessor took 67.10 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 34.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,986 INFO L168 Benchmark]: RCFGBuilder took 729.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 39.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,986 INFO L168 Benchmark]: TraceAbstraction took 2191.78 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 39.6 MB in the beginning and 51.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,986 INFO L168 Benchmark]: Witness Printer took 58.96 ms. Allocated memory is still 107.0 MB. Free memory was 51.0 MB in the beginning and 47.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:01:06,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 38.6 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.31 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 37.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.10 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 34.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 729.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 39.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2191.78 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 39.6 MB in the beginning and 51.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. * Witness Printer took 58.96 ms. Allocated memory is still 107.0 MB. Free memory was 51.0 MB in the beginning and 47.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 532]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 521]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 524]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 526]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 528]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 530]: 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, 82 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2127.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 16.6ms, AutomataDifference: 894.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 202 SDtfs, 309 SDslu, 87 SDs, 0 SdLazy, 627 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 548.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 156.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 77.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 204.3ms SatisfiabilityAnalysisTime, 691.9ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 06:01:07,026 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...