./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/simple-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/list-properties/simple-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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/list-properties/simple-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:46:33,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:46:33,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:46:33,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:46:33,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:46:33,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:46:33,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:46:33,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:46:33,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:46:33,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:46:33,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:46:33,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:46:33,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:46:33,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:46:33,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:46:33,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:46:33,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:46:33,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:46:33,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:46:33,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:46:33,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:46:33,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:46:33,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:46:33,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:46:33,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:46:33,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:46:33,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:46:33,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:46:33,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:46:33,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:46:33,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:33,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:33,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:33,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:33,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:33,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:33,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:33,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:33,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:33,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:33,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:33,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:46:33,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:33,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:33,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:33,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:33,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:33,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:33,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:33,504 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:33,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:33,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:33,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:33,506 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:33,507 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:33,507 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:33,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:33,507 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:33,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:33,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:33,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:33,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:33,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:33,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:33,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:33,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:33,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:33,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:46:33,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:46:33,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:33,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-10-26 03:46:33,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:33,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:34,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:34,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:34,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:34,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-26 03:46:34,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/005eaaccf/57ad83a6debb4cc5b590bc08681685aa/FLAGbb793d9cc [2020-10-26 03:46:34,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:34,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-26 03:46:34,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/005eaaccf/57ad83a6debb4cc5b590bc08681685aa/FLAGbb793d9cc [2020-10-26 03:46:35,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/005eaaccf/57ad83a6debb4cc5b590bc08681685aa [2020-10-26 03:46:35,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:35,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:35,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:35,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:35,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:35,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf523f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35, skipping insertion in model container [2020-10-26 03:46:35,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:35,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:35,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:35,760 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:35,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:35,899 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:35,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35 WrapperNode [2020-10-26 03:46:35,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:35,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:35,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:35,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:35,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... [2020-10-26 03:46:35,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:35,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:35,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:35,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:35,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:36,062 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:36,063 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:36,064 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:36,065 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:46:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:46:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:46:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:36,524 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:36,789 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:36,789 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:46:36,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:36 BoogieIcfgContainer [2020-10-26 03:46:36,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:36,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:36,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:36,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:35" (1/3) ... [2020-10-26 03:46:36,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa0ace9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:36, skipping insertion in model container [2020-10-26 03:46:36,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:35" (2/3) ... [2020-10-26 03:46:36,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa0ace9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:36, skipping insertion in model container [2020-10-26 03:46:36,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:36" (3/3) ... [2020-10-26 03:46:36,804 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-26 03:46:36,818 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:36,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-26 03:46:36,841 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-26 03:46:36,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:36,873 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:36,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:36,874 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:36,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:36,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:36,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:36,875 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-26 03:46:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:36,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:36,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash -668473910, now seen corresponding path program 1 times [2020-10-26 03:46:36,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:36,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787483446] [2020-10-26 03:46:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:37,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787483446] [2020-10-26 03:46:37,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:37,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:46:37,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368948031] [2020-10-26 03:46:37,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:46:37,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:37,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:46:37,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:46:37,240 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-26 03:46:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:37,439 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-26 03:46:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:46:37,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 03:46:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:37,452 INFO L225 Difference]: With dead ends: 52 [2020-10-26 03:46:37,452 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 03:46:37,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:46:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 03:46:37,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-26 03:46:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:46:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-26 03:46:37,503 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 10 [2020-10-26 03:46:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:37,504 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-26 03:46:37,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:46:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-26 03:46:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:37,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:37,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:37,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:46:37,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:37,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:37,508 INFO L82 PathProgramCache]: Analyzing trace with hash 752120503, now seen corresponding path program 1 times [2020-10-26 03:46:37,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:37,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728896514] [2020-10-26 03:46:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:37,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728896514] [2020-10-26 03:46:37,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:37,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:37,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169468300] [2020-10-26 03:46:37,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:37,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:37,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:37,692 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 5 states. [2020-10-26 03:46:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:37,995 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-26 03:46:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:37,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:38,000 INFO L225 Difference]: With dead ends: 72 [2020-10-26 03:46:38,001 INFO L226 Difference]: Without dead ends: 72 [2020-10-26 03:46:38,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-26 03:46:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-10-26 03:46:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 03:46:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-26 03:46:38,014 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-26 03:46:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:38,014 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-26 03:46:38,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-26 03:46:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:38,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:38,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:38,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:46:38,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash 752120502, now seen corresponding path program 1 times [2020-10-26 03:46:38,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:38,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552764070] [2020-10-26 03:46:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:38,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552764070] [2020-10-26 03:46:38,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:38,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:38,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867952035] [2020-10-26 03:46:38,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:38,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:38,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:38,125 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-26 03:46:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:38,367 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-26 03:46:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:38,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:38,370 INFO L225 Difference]: With dead ends: 57 [2020-10-26 03:46:38,370 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 03:46:38,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 03:46:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-26 03:46:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 03:46:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-26 03:46:38,383 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 11 [2020-10-26 03:46:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:38,384 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-26 03:46:38,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-26 03:46:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:46:38,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:38,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:38,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:46:38,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:38,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2025061653, now seen corresponding path program 1 times [2020-10-26 03:46:38,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:38,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553150732] [2020-10-26 03:46:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:38,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553150732] [2020-10-26 03:46:38,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:38,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:46:38,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085090950] [2020-10-26 03:46:38,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:38,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:38,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:38,542 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 5 states. [2020-10-26 03:46:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:38,735 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-10-26 03:46:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:38,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 03:46:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:38,737 INFO L225 Difference]: With dead ends: 58 [2020-10-26 03:46:38,737 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 03:46:38,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 03:46:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-26 03:46:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 03:46:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-26 03:46:38,743 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 16 [2020-10-26 03:46:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:38,744 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-26 03:46:38,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-26 03:46:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:38,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:38,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:38,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:46:38,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1540406454, now seen corresponding path program 1 times [2020-10-26 03:46:38,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548549270] [2020-10-26 03:46:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:38,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548549270] [2020-10-26 03:46:38,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:38,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 03:46:38,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301874537] [2020-10-26 03:46:38,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:46:38,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:38,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:46:38,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:46:38,914 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 8 states. [2020-10-26 03:46:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:39,259 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-26 03:46:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:46:39,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-26 03:46:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:39,261 INFO L225 Difference]: With dead ends: 89 [2020-10-26 03:46:39,262 INFO L226 Difference]: Without dead ends: 89 [2020-10-26 03:46:39,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-26 03:46:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 58. [2020-10-26 03:46:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 03:46:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-26 03:46:39,270 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 19 [2020-10-26 03:46:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:39,270 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-26 03:46:39,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:46:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-26 03:46:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:39,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:39,272 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:39,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:46:39,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044694, now seen corresponding path program 1 times [2020-10-26 03:46:39,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:39,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884669561] [2020-10-26 03:46:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:39,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884669561] [2020-10-26 03:46:39,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:39,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:39,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173341174] [2020-10-26 03:46:39,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:39,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:39,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:39,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:39,424 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 7 states. [2020-10-26 03:46:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:40,012 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-26 03:46:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:46:40,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:46:40,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:40,014 INFO L225 Difference]: With dead ends: 67 [2020-10-26 03:46:40,015 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 03:46:40,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:46:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 03:46:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2020-10-26 03:46:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 03:46:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-26 03:46:40,021 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 19 [2020-10-26 03:46:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:40,021 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-26 03:46:40,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-26 03:46:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:40,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:40,022 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:40,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:46:40,023 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1323044695, now seen corresponding path program 1 times [2020-10-26 03:46:40,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:40,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399240434] [2020-10-26 03:46:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:40,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399240434] [2020-10-26 03:46:40,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:40,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:46:40,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419840086] [2020-10-26 03:46:40,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:40,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:40,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:40,173 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-10-26 03:46:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:40,456 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-26 03:46:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:46:40,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:46:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:40,458 INFO L225 Difference]: With dead ends: 61 [2020-10-26 03:46:40,459 INFO L226 Difference]: Without dead ends: 61 [2020-10-26 03:46:40,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-26 03:46:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2020-10-26 03:46:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 03:46:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-26 03:46:40,465 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 19 [2020-10-26 03:46:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:40,465 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-26 03:46:40,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:46:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-26 03:46:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:46:40,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:40,467 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:40,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:46:40,467 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:40,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:40,468 INFO L82 PathProgramCache]: Analyzing trace with hash 512039653, now seen corresponding path program 1 times [2020-10-26 03:46:40,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:40,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011001188] [2020-10-26 03:46:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:40,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011001188] [2020-10-26 03:46:40,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091475114] [2020-10-26 03:46:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:46:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:40,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-26 03:46:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:41,081 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-26 03:46:41,087 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,105 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:41,109 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-26 03:46:41,111 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:41,119 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,119 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-10-26 03:46:41,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 03:46:41,178 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:41,190 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-26 03:46:41,191 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,196 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:41,196 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:41,197 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-10-26 03:46:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:41,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:46:41,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 12 [2020-10-26 03:46:41,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055996472] [2020-10-26 03:46:41,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 03:46:41,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:41,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 03:46:41,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:46:41,212 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 12 states. [2020-10-26 03:46:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:41,544 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-26 03:46:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:46:41,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-26 03:46:41,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:41,546 INFO L225 Difference]: With dead ends: 60 [2020-10-26 03:46:41,546 INFO L226 Difference]: Without dead ends: 60 [2020-10-26 03:46:41,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:46:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-26 03:46:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-10-26 03:46:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 03:46:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-26 03:46:41,552 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 20 [2020-10-26 03:46:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:41,553 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-26 03:46:41,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 03:46:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-26 03:46:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:46:41,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:41,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:41,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-26 03:46:41,766 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:41,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1306641237, now seen corresponding path program 1 times [2020-10-26 03:46:41,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:41,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840370082] [2020-10-26 03:46:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:41,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:41,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:41,882 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:46:41,882 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:46:41,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:46:41,902 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:46:41,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:46:41 BoogieIcfgContainer [2020-10-26 03:46:41,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:46:41,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:46:41,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:46:41,921 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:46:41,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:36" (3/4) ... [2020-10-26 03:46:41,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:46:41,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:46:41,931 INFO L168 Benchmark]: Toolchain (without parser) took 6713.85 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.3 MB in the beginning and 78.2 MB in the end (delta: -53.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:41,932 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 39.8 MB. Free memory was 26.2 MB in the beginning and 26.2 MB in the end (delta: 35.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:41,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.97 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 25.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:41,934 INFO L168 Benchmark]: Boogie Preprocessor took 65.98 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 23.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:41,934 INFO L168 Benchmark]: RCFGBuilder took 824.46 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 28.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:41,935 INFO L168 Benchmark]: TraceAbstraction took 5125.46 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 27.9 MB in the beginning and 78.2 MB in the end (delta: -50.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:41,936 INFO L168 Benchmark]: Witness Printer took 9.29 ms. Allocated memory is still 104.9 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:41,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 39.8 MB. Free memory was 26.2 MB in the beginning and 26.2 MB in the end (delta: 35.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.97 ms. Allocated memory is still 48.2 MB. Free memory was 23.7 MB in the beginning and 25.7 MB in the end (delta: -2.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.98 ms. Allocated memory is still 48.2 MB. Free memory was 25.5 MB in the beginning and 23.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 824.46 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 28.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5125.46 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 27.9 MB in the beginning and 78.2 MB in the end (delta: -50.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 9.29 ms. Allocated memory is still 104.9 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L544] p->n = 0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L545] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L546] COND TRUE p!=0 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L547] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 249 SDtfs, 481 SDslu, 385 SDs, 0 SdLazy, 941 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 96 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 14384 SizeOfPredicates, 12 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-5485861 [2020-10-26 03:46:44,629 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-26 03:46:44,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:44,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:44,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:44,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:44,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:44,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:44,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:44,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:44,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:44,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:44,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:44,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:46:44,765 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:44,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:44,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:44,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:44,768 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:44,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:44,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:44,769 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:44,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:44,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:44,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:44,770 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:44,771 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:44,771 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:44,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:44,771 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:44,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:46:44,772 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:46:44,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:44,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:44,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:44,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:44,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:44,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:44,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:44,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:44,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:44,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:46:44,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:46:44,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:44,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:46:44,776 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2020-10-26 03:46:45,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:45,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:45,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:45,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:45,288 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:45,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-2.i [2020-10-26 03:46:45,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccb1d27c/00330ff496bb4524b531b2329595f622/FLAGa9f93a14e [2020-10-26 03:46:46,155 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:46,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-2.i [2020-10-26 03:46:46,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccb1d27c/00330ff496bb4524b531b2329595f622/FLAGa9f93a14e [2020-10-26 03:46:46,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccb1d27c/00330ff496bb4524b531b2329595f622 [2020-10-26 03:46:46,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:46,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:46,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:46,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:46,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:46,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:46,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797075e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46, skipping insertion in model container [2020-10-26 03:46:46,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:46,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:46,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:46,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:46,863 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:46,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:46,990 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:46,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46 WrapperNode [2020-10-26 03:46:46,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:46,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:46,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:46,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:47,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... [2020-10-26 03:46:47,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:47,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:47,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:47,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:47,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:47,192 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:47,193 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-26 03:46:47,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-26 03:46:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:47,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:46:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:46:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:46:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:47,631 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:47,895 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:47,895 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:46:47,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:47 BoogieIcfgContainer [2020-10-26 03:46:47,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:47,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:47,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:47,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:47,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:46" (1/3) ... [2020-10-26 03:46:47,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:47, skipping insertion in model container [2020-10-26 03:46:47,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:46" (2/3) ... [2020-10-26 03:46:47,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea2ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:47, skipping insertion in model container [2020-10-26 03:46:47,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:47" (3/3) ... [2020-10-26 03:46:47,916 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2020-10-26 03:46:47,929 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:47,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-26 03:46:47,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-26 03:46:47,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:47,972 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:47,972 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:47,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:47,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:47,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:47,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:47,973 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-26 03:46:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:47,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:48,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:48,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:48,008 INFO L82 PathProgramCache]: Analyzing trace with hash 157453930, now seen corresponding path program 1 times [2020-10-26 03:46:48,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:48,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273497600] [2020-10-26 03:46:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:48,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-26 03:46:48,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273497600] [2020-10-26 03:46:48,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:48,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-26 03:46:48,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904624] [2020-10-26 03:46:48,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 03:46:48,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 03:46:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 03:46:48,294 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-26 03:46:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:48,324 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-26 03:46:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 03:46:48,326 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-26 03:46:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:48,334 INFO L225 Difference]: With dead ends: 51 [2020-10-26 03:46:48,335 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:46:48,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 03:46:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:46:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-26 03:46:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 03:46:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-26 03:46:48,383 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 10 [2020-10-26 03:46:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:48,384 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-26 03:46:48,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 03:46:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-26 03:46:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:48,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:48,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:48,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:46:48,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 157453248, now seen corresponding path program 1 times [2020-10-26 03:46:48,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:48,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562307856] [2020-10-26 03:46:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:48,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:46:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:48,801 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:48,802 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:48,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:48,815 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:48,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:48,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562307856] [2020-10-26 03:46:48,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:48,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:46:48,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236628132] [2020-10-26 03:46:48,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:46:48,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:48,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:46:48,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:46:48,860 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 4 states. [2020-10-26 03:46:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:49,094 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-26 03:46:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:46:49,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:46:49,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:49,097 INFO L225 Difference]: With dead ends: 51 [2020-10-26 03:46:49,097 INFO L226 Difference]: Without dead ends: 51 [2020-10-26 03:46:49,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-26 03:46:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-26 03:46:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:46:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-26 03:46:49,105 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 10 [2020-10-26 03:46:49,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:49,106 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-26 03:46:49,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:46:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-26 03:46:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:49,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:49,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:49,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:46:49,325 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:49,327 INFO L82 PathProgramCache]: Analyzing trace with hash 157453249, now seen corresponding path program 1 times [2020-10-26 03:46:49,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:49,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391914675] [2020-10-26 03:46:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:49,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:46:49,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:49,483 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:49,484 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:49,497 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:49,498 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:49,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:49,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:49,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391914675] [2020-10-26 03:46:49,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:49,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-26 03:46:49,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040934683] [2020-10-26 03:46:49,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:49,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:49,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:49,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:49,641 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2020-10-26 03:46:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:50,049 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-26 03:46:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:50,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 03:46:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:50,053 INFO L225 Difference]: With dead ends: 59 [2020-10-26 03:46:50,053 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 03:46:50,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:46:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 03:46:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-26 03:46:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 03:46:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-26 03:46:50,062 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2020-10-26 03:46:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:50,062 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-26 03:46:50,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-26 03:46:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:46:50,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:50,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:50,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:46:50,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash 5227808, now seen corresponding path program 1 times [2020-10-26 03:46:50,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:50,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594056218] [2020-10-26 03:46:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:50,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:46:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:50,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:50,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594056218] [2020-10-26 03:46:50,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:50,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-26 03:46:50,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16402713] [2020-10-26 03:46:50,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:46:50,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:50,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:46:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:46:50,496 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-10-26 03:46:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:50,667 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-10-26 03:46:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:46:50,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 03:46:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:50,669 INFO L225 Difference]: With dead ends: 56 [2020-10-26 03:46:50,669 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:46:50,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:46:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-26 03:46:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 03:46:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-26 03:46:50,676 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 15 [2020-10-26 03:46:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:50,676 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-26 03:46:50,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:46:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-26 03:46:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:46:50,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:50,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:50,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:46:50,893 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:50,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1162167200, now seen corresponding path program 1 times [2020-10-26 03:46:50,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:50,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450563464] [2020-10-26 03:46:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:51,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:46:51,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:51,095 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-26 03:46:51,096 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,110 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-26 03:46:51,179 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-26 03:46:51,179 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-10-26 03:46:51,181 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,186 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,186 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,187 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-26 03:46:51,231 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-26 03:46:51,232 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,235 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,236 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-10-26 03:46:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:51,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:51,273 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:46:51,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:51,290 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:46:51,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:17 [2020-10-26 03:46:51,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2020-10-26 03:46:51,357 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:51,422 INFO L625 ElimStorePlain]: treesize reduction 34, result has 39.3 percent of original size [2020-10-26 03:46:51,424 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:46:51,424 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2020-10-26 03:46:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:51,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450563464] [2020-10-26 03:46:51,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:51,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2020-10-26 03:46:51,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896148517] [2020-10-26 03:46:51,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:46:51,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:51,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:46:51,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:46:51,433 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 8 states. [2020-10-26 03:46:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:51,945 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-26 03:46:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:46:51,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-26 03:46:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:51,949 INFO L225 Difference]: With dead ends: 86 [2020-10-26 03:46:51,949 INFO L226 Difference]: Without dead ends: 86 [2020-10-26 03:46:51,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-26 03:46:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-26 03:46:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 03:46:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-26 03:46:51,970 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 18 [2020-10-26 03:46:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:51,970 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-26 03:46:51,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:46:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-26 03:46:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:51,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:51,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:52,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-26 03:46:52,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:52,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:52,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140663, now seen corresponding path program 1 times [2020-10-26 03:46:52,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:52,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859202845] [2020-10-26 03:46:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:52,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:46:52,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:52,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:52,350 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,352 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,352 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:52,370 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:46:52,370 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-26 03:46:52,402 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-26 03:46:52,403 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:52,406 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:52,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-26 03:46:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:52,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:52,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859202845] [2020-10-26 03:46:52,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:52,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-26 03:46:52,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113960940] [2020-10-26 03:46:52,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:52,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:52,466 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 6 states. [2020-10-26 03:46:52,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:52,921 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-26 03:46:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:46:52,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-26 03:46:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:52,924 INFO L225 Difference]: With dead ends: 67 [2020-10-26 03:46:52,924 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 03:46:52,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:46:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 03:46:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-10-26 03:46:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 03:46:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-26 03:46:52,930 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2020-10-26 03:46:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:52,930 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-26 03:46:52,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-26 03:46:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:52,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:52,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:53,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-26 03:46:53,143 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1469140664, now seen corresponding path program 1 times [2020-10-26 03:46:53,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:53,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392943274] [2020-10-26 03:46:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:53,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:46:53,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:53,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:53,313 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,319 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:53,350 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:46:53,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,366 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:46:53,381 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,396 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,396 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-26 03:46:53,444 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-26 03:46:53,446 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,471 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-26 03:46:53,471 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,486 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:53,486 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:53,487 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-26 03:46:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:53,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:53,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392943274] [2020-10-26 03:46:53,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:53,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-26 03:46:53,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645558100] [2020-10-26 03:46:53,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:46:53,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:53,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:46:53,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:46:53,781 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 10 states. [2020-10-26 03:46:54,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:54,842 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-10-26 03:46:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:46:54,844 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-26 03:46:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:54,846 INFO L225 Difference]: With dead ends: 63 [2020-10-26 03:46:54,846 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 03:46:54,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:46:54,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 03:46:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2020-10-26 03:46:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 03:46:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-26 03:46:54,860 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 17 [2020-10-26 03:46:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:54,860 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-26 03:46:54,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:46:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-26 03:46:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:46:54,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:54,864 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:55,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-26 03:46:55,077 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1671545519, now seen corresponding path program 1 times [2020-10-26 03:46:55,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:55,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226545832] [2020-10-26 03:46:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:55,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:46:55,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:55,275 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:46:55,276 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,289 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:55,294 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:46:55,294 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,305 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:55,306 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,306 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-10-26 03:46:55,361 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-26 03:46:55,362 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:55,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-26 03:46:55,379 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,385 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:55,385 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:55,386 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-10-26 03:46:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:55,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:55,453 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2020-10-26 03:46:55,455 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-26 03:46:55,486 INFO L625 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2020-10-26 03:46:55,487 INFO L513 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2020-10-26 03:46:55,487 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-26 03:46:55,487 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2020-10-26 03:46:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:55,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226545832] [2020-10-26 03:46:55,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:46:55,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-26 03:46:55,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380127568] [2020-10-26 03:46:55,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:46:55,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:55,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:46:55,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:46:55,499 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-10-26 03:47:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:47:00,200 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-26 03:47:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:47:00,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-26 03:47:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:47:00,205 INFO L225 Difference]: With dead ends: 55 [2020-10-26 03:47:00,205 INFO L226 Difference]: Without dead ends: 55 [2020-10-26 03:47:00,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:47:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-26 03:47:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2020-10-26 03:47:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 03:47:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-10-26 03:47:00,210 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 19 [2020-10-26 03:47:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:47:00,211 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-10-26 03:47:00,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:47:00,211 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-10-26 03:47:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:47:00,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:47:00,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:47:00,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-26 03:47:00,422 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:47:00,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:47:00,423 INFO L82 PathProgramCache]: Analyzing trace with hash 278302293, now seen corresponding path program 1 times [2020-10-26 03:47:00,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:47:00,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254411231] [2020-10-26 03:47:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-26 03:47:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:47:00,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:47:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:47:00,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:47:00,664 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:47:00,664 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:47:00,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-26 03:47:00,885 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:47:00,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:47:00 BoogieIcfgContainer [2020-10-26 03:47:00,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:47:00,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:47:00,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:47:00,923 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:47:00,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:47" (3/4) ... [2020-10-26 03:47:00,927 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:47:00,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:47:00,931 INFO L168 Benchmark]: Toolchain (without parser) took 14609.11 ms. Allocated memory was 48.2 MB in the beginning and 109.1 MB in the end (delta: 60.8 MB). Free memory was 30.9 MB in the beginning and 42.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:47:00,933 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:47:00,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.81 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 25.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:47:00,938 INFO L168 Benchmark]: Boogie Preprocessor took 74.64 ms. Allocated memory is still 48.2 MB. Free memory was 25.9 MB in the beginning and 23.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:47:00,939 INFO L168 Benchmark]: RCFGBuilder took 829.74 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 24.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-10-26 03:47:00,943 INFO L168 Benchmark]: TraceAbstraction took 13021.85 ms. Allocated memory was 58.7 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Free memory was 24.7 MB in the beginning and 42.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:47:00,943 INFO L168 Benchmark]: Witness Printer took 6.44 ms. Allocated memory is still 109.1 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:47:00,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 662.81 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 25.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.64 ms. Allocated memory is still 48.2 MB. Free memory was 25.9 MB in the beginning and 23.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 829.74 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 24.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13021.85 ms. Allocated memory was 58.7 MB in the beginning and 109.1 MB in the end (delta: 50.3 MB). Free memory was 24.7 MB in the beginning and 42.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.44 ms. Allocated memory is still 109.1 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L544] p->n = 0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L545] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L546] COND TRUE p!=0 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L547] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=1] [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={0:0}] [L550] p = p->n [L546] COND FALSE !(p!=0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] [L552] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 387 SDslu, 463 SDs, 0 SdLazy, 622 SolverSat, 86 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 216 ConstructedInterpolants, 1 QuantifiedInterpolants, 14850 SizeOfPredicates, 49 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...