./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/alternating_list-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da856cb29218eae000c82400da3ef1c667e9f55c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:26:30,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:30,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:30,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:30,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:30,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:30,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:30,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:30,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:30,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:30,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:30,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:30,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:30,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:30,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:30,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:30,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:30,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:30,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:30,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:30,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:30,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:30,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:30,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:30,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:30,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:30,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:30,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:30,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:30,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:30,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:30,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:30,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:30,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:30,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:30,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:30,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:30,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:30,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:30,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:30,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:30,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:26:30,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:30,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:30,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:30,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:30,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:30,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:30,992 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:30,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:30,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:30,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:30,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:26:30,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:30,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da856cb29218eae000c82400da3ef1c667e9f55c [2021-08-27 04:26:31,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:31,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:31,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:31,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:31,231 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:31,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/alternating_list-2.i [2021-08-27 04:26:31,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71994544a/73c302e255bc435087d28f42f033d6ff/FLAGa05f0138d [2021-08-27 04:26:31,667 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:31,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-2.i [2021-08-27 04:26:31,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71994544a/73c302e255bc435087d28f42f033d6ff/FLAGa05f0138d [2021-08-27 04:26:31,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71994544a/73c302e255bc435087d28f42f033d6ff [2021-08-27 04:26:31,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:31,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:31,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:31,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:31,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:31,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678f7830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31, skipping insertion in model container [2021-08-27 04:26:31,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:31,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:31,918 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-08-27 04:26:31,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:31,924 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:26:31,950 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-2.i[23574,23587] [2021-08-27 04:26:31,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:31,968 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:26:31,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31 WrapperNode [2021-08-27 04:26:31,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:31,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:26:31,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:26:31,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:26:31,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:31,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:32,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:26:32,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:26:32,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:26:32,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:26:32,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (1/1) ... [2021-08-27 04:26:32,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:32,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:32,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:26:32,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 04:26:32,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 04:26:32,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 04:26:32,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 04:26:32,059 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 04:26:32,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:26:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:26:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:26:32,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:26:32,060 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:26:32,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 04:26:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:26:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:26:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:26:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:26:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:26:32,075 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:26:32,076 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:26:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:26:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:26:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:26:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:26:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:26:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:26:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:26:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:26:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:26:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:26:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:26:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:26:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:26:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:26:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:26:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:26:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:26:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:26:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:26:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:26:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 04:26:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:26:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:26:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:26:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:26:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:26:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:26:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:26:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:26:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:26:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:26:32,403 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 04:26:32,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:26:32,609 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-27 04:26:32,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:32 BoogieIcfgContainer [2021-08-27 04:26:32,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:26:32,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:26:32,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:26:32,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:26:32,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:26:31" (1/3) ... [2021-08-27 04:26:32,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23761ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:32, skipping insertion in model container [2021-08-27 04:26:32,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:31" (2/3) ... [2021-08-27 04:26:32,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23761ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:32, skipping insertion in model container [2021-08-27 04:26:32,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:32" (3/3) ... [2021-08-27 04:26:32,623 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2021-08-27 04:26:32,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:26:32,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-08-27 04:26:32,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:26:32,665 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:26:32,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-08-27 04:26:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:26:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 04:26:32,679 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:32,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:32,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:32,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1080134069, now seen corresponding path program 1 times [2021-08-27 04:26:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:32,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177822439] [2021-08-27 04:26:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:32,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:32,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:32,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:32,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177822439] [2021-08-27 04:26:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177822439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:32,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:32,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:32,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468345773] [2021-08-27 04:26:32,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 04:26:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:32,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 04:26:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:26:32,854 INFO L87 Difference]: Start difference. First operand has 81 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 75 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:32,955 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-08-27 04:26:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 04:26:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 04:26:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:32,959 INFO L225 Difference]: With dead ends: 81 [2021-08-27 04:26:32,960 INFO L226 Difference]: Without dead ends: 74 [2021-08-27 04:26:32,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 04:26:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-27 04:26:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-27 04:26:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 41 states have (on average 1.853658536585366) internal successors, (76), 70 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-08-27 04:26:32,982 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 10 [2021-08-27 04:26:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:32,982 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-08-27 04:26:32,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-08-27 04:26:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:26:32,983 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:32,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:32,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:26:32,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:32,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:32,985 INFO L82 PathProgramCache]: Analyzing trace with hash -875617869, now seen corresponding path program 1 times [2021-08-27 04:26:32,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:32,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752740366] [2021-08-27 04:26:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:32,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:33,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:33,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752740366] [2021-08-27 04:26:33,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752740366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:33,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:33,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:33,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947967837] [2021-08-27 04:26:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:33,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:33,081 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:33,265 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-08-27 04:26:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:33,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 04:26:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:33,268 INFO L225 Difference]: With dead ends: 95 [2021-08-27 04:26:33,268 INFO L226 Difference]: Without dead ends: 95 [2021-08-27 04:26:33,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-27 04:26:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2021-08-27 04:26:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 71 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-08-27 04:26:33,280 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 11 [2021-08-27 04:26:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:33,280 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-08-27 04:26:33,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-08-27 04:26:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 04:26:33,281 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:33,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:33,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:26:33,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash -875617868, now seen corresponding path program 1 times [2021-08-27 04:26:33,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:33,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183102989] [2021-08-27 04:26:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:33,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:33,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:33,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183102989] [2021-08-27 04:26:33,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183102989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:33,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:33,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:33,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638821763] [2021-08-27 04:26:33,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:33,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:33,378 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:33,532 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-08-27 04:26:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:33,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-27 04:26:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:33,535 INFO L225 Difference]: With dead ends: 103 [2021-08-27 04:26:33,535 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 04:26:33,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 04:26:33,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2021-08-27 04:26:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.5384615384615385) internal successors, (100), 87 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2021-08-27 04:26:33,550 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 11 [2021-08-27 04:26:33,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:33,550 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2021-08-27 04:26:33,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2021-08-27 04:26:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:26:33,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:33,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:33,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:26:33,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:33,554 INFO L82 PathProgramCache]: Analyzing trace with hash 888231595, now seen corresponding path program 1 times [2021-08-27 04:26:33,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:33,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678093019] [2021-08-27 04:26:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:33,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:33,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:33,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678093019] [2021-08-27 04:26:33,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678093019] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:33,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:33,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:33,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066415863] [2021-08-27 04:26:33,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:33,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:33,618 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:33,726 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-08-27 04:26:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:33,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 04:26:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:33,728 INFO L225 Difference]: With dead ends: 140 [2021-08-27 04:26:33,728 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 04:26:33,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 04:26:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 100. [2021-08-27 04:26:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.527027027027027) internal successors, (113), 96 states have internal predecessors, (113), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2021-08-27 04:26:33,743 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 18 [2021-08-27 04:26:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:33,743 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2021-08-27 04:26:33,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2021-08-27 04:26:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 04:26:33,744 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:33,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:33,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:26:33,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash 887923765, now seen corresponding path program 1 times [2021-08-27 04:26:33,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:33,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508922899] [2021-08-27 04:26:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:33,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:33,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:33,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508922899] [2021-08-27 04:26:33,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508922899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:33,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:33,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-27 04:26:33,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358045028] [2021-08-27 04:26:33,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:33,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:33,823 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:33,987 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2021-08-27 04:26:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-08-27 04:26:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:33,988 INFO L225 Difference]: With dead ends: 145 [2021-08-27 04:26:33,988 INFO L226 Difference]: Without dead ends: 145 [2021-08-27 04:26:33,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-27 04:26:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 103. [2021-08-27 04:26:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 states have internal predecessors, (116), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-08-27 04:26:33,991 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 18 [2021-08-27 04:26:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:33,992 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-08-27 04:26:33,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-08-27 04:26:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-27 04:26:33,992 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:33,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:33,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:26:33,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr26ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1724463005, now seen corresponding path program 1 times [2021-08-27 04:26:33,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:33,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778153020] [2021-08-27 04:26:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:33,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:34,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:34,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778153020] [2021-08-27 04:26:34,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778153020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:34,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:34,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:34,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684821003] [2021-08-27 04:26:34,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:34,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:34,047 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:34,167 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2021-08-27 04:26:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-08-27 04:26:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:34,168 INFO L225 Difference]: With dead ends: 110 [2021-08-27 04:26:34,169 INFO L226 Difference]: Without dead ends: 110 [2021-08-27 04:26:34,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-27 04:26:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-08-27 04:26:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5) internal successors, (117), 100 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2021-08-27 04:26:34,173 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 19 [2021-08-27 04:26:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:34,173 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2021-08-27 04:26:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2021-08-27 04:26:34,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:34,174 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:34,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:34,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:26:34,175 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr22ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:34,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:34,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1918791492, now seen corresponding path program 1 times [2021-08-27 04:26:34,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:34,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142781744] [2021-08-27 04:26:34,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:34,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:34,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:34,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142781744] [2021-08-27 04:26:34,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142781744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:34,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:34,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:34,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934142736] [2021-08-27 04:26:34,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:34,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:34,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:34,237 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:34,354 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2021-08-27 04:26:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:26:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:34,356 INFO L225 Difference]: With dead ends: 114 [2021-08-27 04:26:34,356 INFO L226 Difference]: Without dead ends: 114 [2021-08-27 04:26:34,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-27 04:26:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-27 04:26:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2021-08-27 04:26:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.4875) internal successors, (119), 102 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-08-27 04:26:34,358 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 20 [2021-08-27 04:26:34,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:34,358 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-08-27 04:26:34,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-08-27 04:26:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:26:34,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:34,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:34,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 04:26:34,359 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr23ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:34,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:34,359 INFO L82 PathProgramCache]: Analyzing trace with hash -647005726, now seen corresponding path program 1 times [2021-08-27 04:26:34,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:34,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724191970] [2021-08-27 04:26:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:34,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:34,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:34,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724191970] [2021-08-27 04:26:34,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724191970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:34,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:34,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-27 04:26:34,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608900452] [2021-08-27 04:26:34,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 04:26:34,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 04:26:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:34,428 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:34,616 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2021-08-27 04:26:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:26:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 04:26:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:34,617 INFO L225 Difference]: With dead ends: 121 [2021-08-27 04:26:34,618 INFO L226 Difference]: Without dead ends: 121 [2021-08-27 04:26:34,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:26:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-27 04:26:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2021-08-27 04:26:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-08-27 04:26:34,621 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 21 [2021-08-27 04:26:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:34,621 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-08-27 04:26:34,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-08-27 04:26:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:26:34,623 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:34,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:34,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 04:26:34,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:34,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:34,624 INFO L82 PathProgramCache]: Analyzing trace with hash -648422782, now seen corresponding path program 1 times [2021-08-27 04:26:34,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:34,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472802110] [2021-08-27 04:26:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:34,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:34,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:34,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472802110] [2021-08-27 04:26:34,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472802110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:34,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:34,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:34,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151212617] [2021-08-27 04:26:34,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:34,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:34,712 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:34,790 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-08-27 04:26:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 04:26:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:34,791 INFO L225 Difference]: With dead ends: 116 [2021-08-27 04:26:34,791 INFO L226 Difference]: Without dead ends: 105 [2021-08-27 04:26:34,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-08-27 04:26:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-08-27 04:26:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.481012658227848) internal successors, (117), 101 states have internal predecessors, (117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-08-27 04:26:34,793 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 21 [2021-08-27 04:26:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:34,793 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-08-27 04:26:34,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-08-27 04:26:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:26:34,794 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:34,794 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:34,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 04:26:34,794 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:34,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1983052608, now seen corresponding path program 1 times [2021-08-27 04:26:34,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:34,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738906354] [2021-08-27 04:26:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:34,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:34,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:34,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738906354] [2021-08-27 04:26:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738906354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:34,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:34,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:34,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71626627] [2021-08-27 04:26:34,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:34,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:34,848 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:34,998 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-08-27 04:26:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:34,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 04:26:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:35,000 INFO L225 Difference]: With dead ends: 107 [2021-08-27 04:26:35,000 INFO L226 Difference]: Without dead ends: 107 [2021-08-27 04:26:35,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-27 04:26:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-27 04:26:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-08-27 04:26:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 98 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2021-08-27 04:26:35,002 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 21 [2021-08-27 04:26:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:35,002 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2021-08-27 04:26:35,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2021-08-27 04:26:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 04:26:35,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:35,003 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:35,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:26:35,003 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:35,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:35,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1983052609, now seen corresponding path program 1 times [2021-08-27 04:26:35,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:35,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757518802] [2021-08-27 04:26:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:35,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:35,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:35,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757518802] [2021-08-27 04:26:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757518802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:35,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:35,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 04:26:35,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704916254] [2021-08-27 04:26:35,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 04:26:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 04:26:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-27 04:26:35,086 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:35,270 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-08-27 04:26:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 04:26:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-08-27 04:26:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:35,270 INFO L225 Difference]: With dead ends: 98 [2021-08-27 04:26:35,271 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 04:26:35,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-08-27 04:26:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 04:26:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2021-08-27 04:26:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 86 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-08-27 04:26:35,273 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 21 [2021-08-27 04:26:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:35,273 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-08-27 04:26:35,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-08-27 04:26:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 04:26:35,273 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:35,273 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:35,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-27 04:26:35,273 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr28ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 04:26:35,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1153932792, now seen corresponding path program 1 times [2021-08-27 04:26:35,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:35,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773541509] [2021-08-27 04:26:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:35,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:35,283 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 04:26:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:35,304 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 04:26:35,304 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 04:26:35,305 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 04:26:35,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 04:26:35,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:35,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:35,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-27 04:26:35,312 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:26:35,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:26:35 BoogieIcfgContainer [2021-08-27 04:26:35,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:26:35,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:26:35,326 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:26:35,326 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:26:35,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:32" (3/4) ... [2021-08-27 04:26:35,327 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 04:26:35,348 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:26:35,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:26:35,349 INFO L168 Benchmark]: Toolchain (without parser) took 3653.68 ms. Allocated memory was 48.2 MB in the beginning and 130.0 MB in the end (delta: 81.8 MB). Free memory was 22.4 MB in the beginning and 69.3 MB in the end (delta: -47.0 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,349 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:26:35,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.27 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.2 MB in the beginning and 36.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,350 INFO L168 Benchmark]: Boogie Preprocessor took 33.31 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,350 INFO L168 Benchmark]: RCFGBuilder took 612.99 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 38.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,350 INFO L168 Benchmark]: TraceAbstraction took 2707.65 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 38.2 MB in the beginning and 72.5 MB in the end (delta: -34.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,350 INFO L168 Benchmark]: Witness Printer took 22.75 ms. Allocated memory is still 130.0 MB. Free memory was 72.5 MB in the beginning and 69.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:35,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.27 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.2 MB in the beginning and 36.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.31 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 612.99 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 34.3 MB in the beginning and 38.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2707.65 ms. Allocated memory was 73.4 MB in the beginning and 130.0 MB in the end (delta: 56.6 MB). Free memory was 38.2 MB in the beginning and 72.5 MB in the end (delta: -34.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 22.75 ms. Allocated memory is still 130.0 MB. Free memory was 72.5 MB in the beginning and 69.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 573]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, p={-1:0}] [L539] p->h = 2 VAL [a={-1:0}, flag=1, p={-1:0}] [L540] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}] [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L547] p->n = t VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L548] EXPR p->n VAL [a={-1:0}, flag=0, p={-1:0}, p->n={-2:0}, t={-2:0}] [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, flag=0, p={-2:0}, t={-2:0}] [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}, t={-2:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}, p->h=2, t={-2:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=2, t={-2:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 100 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2650.7ms, OverallIterations: 12, TraceHistogramMax: 2, EmptinessCheckTime: 13.6ms, AutomataDifference: 1586.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 606 SDtfs, 840 SDslu, 952 SDs, 0 SdLazy, 1694 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 954.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 473.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=8, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 69.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 153 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.8ms SsaConstructionTime, 123.7ms SatisfiabilityAnalysisTime, 644.6ms InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 4/4 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 proved your program to be incorrect! [2021-08-27 04:26:35,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...