./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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-ext-properties/list-ext_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-ext-properties/list-ext_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6c9e5ba66547a8817cc7b16e9df45177efa4b55 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:58:19,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:58:19,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:58:19,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:58:19,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:58:19,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:58:19,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:58:19,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:58:19,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:58:19,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:58:19,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:58:19,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:58:19,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:58:19,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:58:19,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:58:19,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:58:19,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:58:19,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:58:19,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:58:19,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:58:19,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:58:19,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:58:19,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:58:19,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:58:19,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:58:19,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:58:19,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:58:19,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:58:19,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:58:19,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:58:19,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:58:19,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:58:19,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:58:19,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:58:19,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:58:19,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:58:19,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:58:19,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:58:19,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:58:19,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:58:19,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:58:19,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:58:19,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:58:19,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:58:19,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:58:19,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:58:19,151 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:58:19,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:58:19,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:58:19,152 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:58:19,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:58:19,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:58:19,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:58:19,153 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:58:19,153 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:58:19,153 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:58:19,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:58:19,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:58:19,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:58:19,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:58:19,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:58:19,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:58:19,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:58:19,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:58:19,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:19,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:58:19,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:58:19,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:58:19,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:58:19,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:58:19,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-10-20 05:58:19,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:58:19,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:58:19,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:58:19,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:58:19,371 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:58:19,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-10-20 05:58:19,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd691b324/d253922a921446b4b81341cabcdec30a/FLAGecd80709d [2020-10-20 05:58:19,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:58:19,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-10-20 05:58:19,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd691b324/d253922a921446b4b81341cabcdec30a/FLAGecd80709d [2020-10-20 05:58:20,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd691b324/d253922a921446b4b81341cabcdec30a [2020-10-20 05:58:20,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:58:20,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:58:20,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:20,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:58:20,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:58:20,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd03498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20, skipping insertion in model container [2020-10-20 05:58:20,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:58:20,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:58:20,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:20,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:58:20,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:20,912 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:58:20,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20 WrapperNode [2020-10-20 05:58:20,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:20,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:58:20,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:58:20,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:58:20,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... [2020-10-20 05:58:20,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:58:20,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:58:20,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:58:20,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:58:20,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:58:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:58:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:58:21,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:58:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:58:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:58:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:58:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:58:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 05:58:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:58:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:58:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:58:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:58:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:58:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:58:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:58:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:58:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-20 05:58:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:58:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:58:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:58:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:58:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:58:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:58:21,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:58:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:58:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:58:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:58:21,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:58:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:58:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:58:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:58:21,072 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:58:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:58:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:58:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:58:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:58:21,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:58:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:58:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:58:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:58:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:58:21,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:58:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:58:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:58:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:58:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:58:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:58:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:58:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:58:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:58:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:58:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:58:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:58:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:58:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:58:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:58:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:58:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:58:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:58:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:58:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:58:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:58:21,081 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:58:21,090 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:58:21,091 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:58:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:58:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:58:21,092 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:58:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:58:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:58:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:58:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:58:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:58:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:58:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:58:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:58:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:58:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:58:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:58:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:58:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:58:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:58:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:58:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:58:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:58:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:58:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:58:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:58:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 05:58:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:58:21,445 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 05:58:21,793 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:58:21,793 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 05:58:21,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21 BoogieIcfgContainer [2020-10-20 05:58:21,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:58:21,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:58:21,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:58:21,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:58:21,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:58:20" (1/3) ... [2020-10-20 05:58:21,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edefd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:21, skipping insertion in model container [2020-10-20 05:58:21,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:20" (2/3) ... [2020-10-20 05:58:21,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edefd10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:21, skipping insertion in model container [2020-10-20 05:58:21,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21" (3/3) ... [2020-10-20 05:58:21,804 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-10-20 05:58:21,817 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:58:21,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-20 05:58:21,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-20 05:58:21,863 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:58:21,863 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:58:21,863 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:58:21,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:58:21,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:58:21,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:58:21,864 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:58:21,864 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:58:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-20 05:58:21,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:58:21,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:21,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:21,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-10-20 05:58:21,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:21,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504911501] [2020-10-20 05:58:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:22,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504911501] [2020-10-20 05:58:22,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:22,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:58:22,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580874707] [2020-10-20 05:58:22,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:58:22,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:58:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:58:22,216 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-10-20 05:58:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:22,483 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-20 05:58:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:58:22,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 05:58:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:22,495 INFO L225 Difference]: With dead ends: 100 [2020-10-20 05:58:22,496 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 05:58:22,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:58:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 05:58:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-20 05:58:22,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 05:58:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-20 05:58:22,546 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-10-20 05:58:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:22,547 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-20 05:58:22,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:58:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-20 05:58:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:58:22,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:22,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:22,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:58:22,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-10-20 05:58:22,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:22,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823941760] [2020-10-20 05:58:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:22,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:22,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823941760] [2020-10-20 05:58:22,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:22,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:58:22,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329766693] [2020-10-20 05:58:22,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:58:22,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:22,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:58:22,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:58:22,656 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-10-20 05:58:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:22,942 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-10-20 05:58:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:58:22,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 05:58:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:22,944 INFO L225 Difference]: With dead ends: 113 [2020-10-20 05:58:22,944 INFO L226 Difference]: Without dead ends: 113 [2020-10-20 05:58:22,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-20 05:58:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-10-20 05:58:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:58:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-10-20 05:58:22,956 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-10-20 05:58:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:22,956 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-10-20 05:58:22,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:58:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-10-20 05:58:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:58:22,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:22,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:22,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:58:22,958 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-10-20 05:58:22,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:22,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701462504] [2020-10-20 05:58:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:23,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701462504] [2020-10-20 05:58:23,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:23,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:58:23,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035648976] [2020-10-20 05:58:23,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:58:23,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:58:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:58:23,113 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-10-20 05:58:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:23,423 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-10-20 05:58:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:23,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 05:58:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:23,427 INFO L225 Difference]: With dead ends: 129 [2020-10-20 05:58:23,427 INFO L226 Difference]: Without dead ends: 129 [2020-10-20 05:58:23,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-20 05:58:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-20 05:58:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 05:58:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-10-20 05:58:23,439 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-10-20 05:58:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:23,439 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-10-20 05:58:23,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:58:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-10-20 05:58:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:58:23,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:23,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:23,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:58:23,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-10-20 05:58:23,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:23,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350684415] [2020-10-20 05:58:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:23,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350684415] [2020-10-20 05:58:23,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:23,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:23,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016619230] [2020-10-20 05:58:23,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:23,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:23,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:23,568 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-10-20 05:58:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:24,029 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-20 05:58:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:24,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:58:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:24,032 INFO L225 Difference]: With dead ends: 157 [2020-10-20 05:58:24,032 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 05:58:24,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 05:58:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-20 05:58:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-20 05:58:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-20 05:58:24,042 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-10-20 05:58:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:24,043 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-20 05:58:24,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-20 05:58:24,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:58:24,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:24,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:24,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:58:24,045 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-10-20 05:58:24,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:24,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993657009] [2020-10-20 05:58:24,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:24,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993657009] [2020-10-20 05:58:24,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:24,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:24,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313854918] [2020-10-20 05:58:24,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:24,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:24,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:24,184 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-10-20 05:58:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:24,743 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-20 05:58:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:58:24,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 05:58:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:24,745 INFO L225 Difference]: With dead ends: 160 [2020-10-20 05:58:24,745 INFO L226 Difference]: Without dead ends: 160 [2020-10-20 05:58:24,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:58:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-20 05:58:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-10-20 05:58:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 05:58:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-20 05:58:24,765 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-10-20 05:58:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:24,765 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-20 05:58:24,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-20 05:58:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:58:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:24,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:24,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:58:24,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-10-20 05:58:24,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:24,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836503003] [2020-10-20 05:58:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:24,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836503003] [2020-10-20 05:58:24,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:24,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:58:24,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058304258] [2020-10-20 05:58:24,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:58:24,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:24,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:58:24,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:24,907 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-10-20 05:58:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:25,270 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-10-20 05:58:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:25,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-20 05:58:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:25,273 INFO L225 Difference]: With dead ends: 190 [2020-10-20 05:58:25,273 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 05:58:25,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 05:58:25,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-10-20 05:58:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 05:58:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-20 05:58:25,281 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-10-20 05:58:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:25,282 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-20 05:58:25,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:58:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-20 05:58:25,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:25,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:25,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:25,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:58:25,284 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:25,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-10-20 05:58:25,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:25,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412924897] [2020-10-20 05:58:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:25,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412924897] [2020-10-20 05:58:25,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:25,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:58:25,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960734898] [2020-10-20 05:58:25,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:58:25,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:58:25,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:25,366 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-10-20 05:58:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:25,782 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-10-20 05:58:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:25,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-20 05:58:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:25,784 INFO L225 Difference]: With dead ends: 176 [2020-10-20 05:58:25,785 INFO L226 Difference]: Without dead ends: 176 [2020-10-20 05:58:25,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-20 05:58:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-10-20 05:58:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 05:58:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-20 05:58:25,793 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-10-20 05:58:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:25,794 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-20 05:58:25,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:58:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-20 05:58:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:25,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:25,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:25,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:58:25,796 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-10-20 05:58:25,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:25,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344810112] [2020-10-20 05:58:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:25,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344810112] [2020-10-20 05:58:25,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:25,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:25,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716437578] [2020-10-20 05:58:25,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:25,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:25,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:25,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:25,887 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-10-20 05:58:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:26,246 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-10-20 05:58:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:58:26,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-20 05:58:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:26,249 INFO L225 Difference]: With dead ends: 129 [2020-10-20 05:58:26,249 INFO L226 Difference]: Without dead ends: 129 [2020-10-20 05:58:26,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-20 05:58:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-10-20 05:58:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 05:58:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-20 05:58:26,255 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-10-20 05:58:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:26,255 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-20 05:58:26,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-20 05:58:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 05:58:26,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:26,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:26,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:58:26,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:26,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-10-20 05:58:26,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:26,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192135560] [2020-10-20 05:58:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:58:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:26,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192135560] [2020-10-20 05:58:26,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:26,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:58:26,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411520341] [2020-10-20 05:58:26,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:58:26,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:58:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:58:26,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:58:26,356 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-10-20 05:58:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:26,770 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-20 05:58:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 05:58:26,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-20 05:58:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:26,771 INFO L225 Difference]: With dead ends: 127 [2020-10-20 05:58:26,771 INFO L226 Difference]: Without dead ends: 127 [2020-10-20 05:58:26,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:58:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-20 05:58:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-10-20 05:58:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 05:58:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-20 05:58:26,776 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-10-20 05:58:26,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:26,777 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-20 05:58:26,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:58:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-20 05:58:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:58:26,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:26,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:26,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 05:58:26,779 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:26,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:26,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-10-20 05:58:26,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:58:26,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546245469] [2020-10-20 05:58:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:58:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:58:26,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:58:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:58:26,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:58:26,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:58:26,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:58:26,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 05:58:26,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:58:26 BoogieIcfgContainer [2020-10-20 05:58:26,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:58:26,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:58:26,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:58:26,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:58:26,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:21" (3/4) ... [2020-10-20 05:58:26,886 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:58:26,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:58:26,889 INFO L168 Benchmark]: Toolchain (without parser) took 6599.39 ms. Allocated memory was 34.6 MB in the beginning and 89.7 MB in the end (delta: 55.1 MB). Free memory was 10.7 MB in the beginning and 25.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 40.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,890 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 33.0 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 28.5 kB). Peak memory consumption was 28.5 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.83 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 9.9 MB in the beginning and 22.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,891 INFO L168 Benchmark]: Boogie Preprocessor took 81.36 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 18.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,892 INFO L168 Benchmark]: RCFGBuilder took 800.67 ms. Allocated memory was 46.1 MB in the beginning and 51.9 MB in the end (delta: 5.8 MB). Free memory was 18.8 MB in the beginning and 30.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,893 INFO L168 Benchmark]: TraceAbstraction took 5083.91 ms. Allocated memory was 51.9 MB in the beginning and 89.7 MB in the end (delta: 37.7 MB). Free memory was 30.4 MB in the beginning and 25.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:26,894 INFO L168 Benchmark]: Witness Printer took 4.97 ms. Allocated memory is still 89.7 MB. Free memory is still 25.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 05:58:26,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 33.0 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 28.5 kB). Peak memory consumption was 28.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 617.83 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 9.9 MB in the beginning and 22.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 81.36 ms. Allocated memory is still 46.1 MB. Free memory was 22.0 MB in the beginning and 18.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 800.67 ms. Allocated memory was 46.1 MB in the beginning and 51.9 MB in the end (delta: 5.8 MB). Free memory was 18.8 MB in the beginning and 30.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5083.91 ms. Allocated memory was 51.9 MB in the beginning and 89.7 MB in the end (delta: 37.7 MB). Free memory was 30.4 MB in the beginning and 25.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 14.3 GB. * Witness Printer took 4.97 ms. Allocated memory is still 89.7 MB. Free memory is still 25.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext_2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:58:29,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:58:29,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:58:29,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:58:29,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:58:29,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:58:29,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:58:29,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:58:29,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:58:29,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:58:29,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:58:29,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:58:29,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:58:29,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:58:29,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:58:29,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:58:29,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:58:29,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:58:29,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:58:29,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:58:29,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:58:29,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:58:29,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:58:29,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:58:29,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:58:29,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:58:29,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:58:29,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:58:29,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:58:29,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:58:29,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:58:29,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:58:29,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:58:29,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:58:29,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:58:29,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:58:29,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:58:29,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:58:29,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:58:29,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:58:29,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:58:29,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:58:29,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:58:29,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:58:29,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:58:29,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:58:29,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:58:29,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:58:29,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:58:29,234 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:58:29,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:58:29,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:58:29,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:58:29,236 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:58:29,236 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:58:29,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:58:29,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:58:29,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:58:29,237 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:58:29,238 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:58:29,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:58:29,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:58:29,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:58:29,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:58:29,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:58:29,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:58:29,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:29,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:58:29,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:58:29,240 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:58:29,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:58:29,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:58:29,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:58:29,241 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6c9e5ba66547a8817cc7b16e9df45177efa4b55 [2020-10-20 05:58:29,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:58:29,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:58:29,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:58:29,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:58:29,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:58:29,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-10-20 05:58:29,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6c8580a/4351bdcbaa1c4985af29fbf844ad7973/FLAGd91411c7e [2020-10-20 05:58:30,043 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:58:30,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2020-10-20 05:58:30,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6c8580a/4351bdcbaa1c4985af29fbf844ad7973/FLAGd91411c7e [2020-10-20 05:58:30,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6c8580a/4351bdcbaa1c4985af29fbf844ad7973 [2020-10-20 05:58:30,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:58:30,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:58:30,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:30,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:58:30,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:58:30,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:30,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23630d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30, skipping insertion in model container [2020-10-20 05:58:30,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:30,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:58:30,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:58:30,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:30,858 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:58:30,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:58:30,978 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:58:30,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30 WrapperNode [2020-10-20 05:58:30,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:58:30,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:58:30,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:58:30,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:58:30,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:30,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... [2020-10-20 05:58:31,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:58:31,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:58:31,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:58:31,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:58:31,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:58:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:58:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:58:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:58:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 05:58:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:58:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:58:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:58:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:58:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:58:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 05:58:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:58:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:58:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 05:58:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 05:58:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 05:58:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 05:58:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:58:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 05:58:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-20 05:58:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:58:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:58:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:58:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:58:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:58:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:58:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:58:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:58:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:58:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:58:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:58:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:58:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:58:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:58:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:58:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:58:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:58:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:58:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:58:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:58:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:58:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:58:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:58:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:58:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:58:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:58:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:58:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:58:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:58:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:58:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:58:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:58:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:58:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:58:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:58:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:58:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:58:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:58:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:58:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:58:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:58:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:58:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:58:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:58:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:58:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:58:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:58:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:58:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:58:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:58:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:58:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:58:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:58:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:58:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:58:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:58:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:58:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:58:31,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:58:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:58:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:58:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:58:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:58:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:58:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:58:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:58:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:58:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:58:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:58:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:58:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:58:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:58:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:58:31,162 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:58:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:58:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:58:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:58:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:58:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:58:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:58:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:58:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:58:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:58:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:58:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:58:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:58:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:58:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:58:31,165 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:58:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:58:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:58:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:58:31,166 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:58:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:58:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:58:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:58:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:58:31,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:58:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:58:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:58:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:58:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:58:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:58:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:58:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:58:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:58:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 05:58:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:58:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:58:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 05:58:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 05:58:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 05:58:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 05:58:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:58:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:58:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 05:58:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:58:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 05:58:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 05:58:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 05:58:31,585 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 05:58:32,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:58:32,022 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 05:58:32,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:32 BoogieIcfgContainer [2020-10-20 05:58:32,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:58:32,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:58:32,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:58:32,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:58:32,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:58:30" (1/3) ... [2020-10-20 05:58:32,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b0017e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:32, skipping insertion in model container [2020-10-20 05:58:32,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:58:30" (2/3) ... [2020-10-20 05:58:32,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b0017e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:58:32, skipping insertion in model container [2020-10-20 05:58:32,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:32" (3/3) ... [2020-10-20 05:58:32,034 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2020-10-20 05:58:32,046 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:58:32,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-20 05:58:32,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-20 05:58:32,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:58:32,091 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:58:32,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:58:32,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:58:32,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:58:32,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:58:32,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:58:32,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:58:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-20 05:58:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:58:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:32,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:32,120 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-10-20 05:58:32,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:32,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271138335] [2020-10-20 05:58:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 05:58:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:32,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:58:32,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:32,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:58:32,435 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:32,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:32,450 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:32,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:58:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:32,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:32,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271138335] [2020-10-20 05:58:32,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:32,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 05:58:32,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080334505] [2020-10-20 05:58:32,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:32,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:32,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:32,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:32,628 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-10-20 05:58:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:33,620 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-10-20 05:58:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:33,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 05:58:33,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:33,635 INFO L225 Difference]: With dead ends: 160 [2020-10-20 05:58:33,638 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 05:58:33,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:58:33,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 05:58:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-20 05:58:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 05:58:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-10-20 05:58:33,712 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-10-20 05:58:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:33,713 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-10-20 05:58:33,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-10-20 05:58:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:58:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:33,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:33,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:58:33,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-10-20 05:58:33,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:33,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10257959] [2020-10-20 05:58:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 05:58:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:34,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:58:34,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:34,068 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:58:34,068 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,071 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,072 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,072 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:58:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:34,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:34,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10257959] [2020-10-20 05:58:34,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:34,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 05:58:34,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499535831] [2020-10-20 05:58:34,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:58:34,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:58:34,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:58:34,101 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-10-20 05:58:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:34,450 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-20 05:58:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:58:34,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:58:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:34,451 INFO L225 Difference]: With dead ends: 109 [2020-10-20 05:58:34,452 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 05:58:34,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:58:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 05:58:34,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-20 05:58:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-20 05:58:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-20 05:58:34,468 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-10-20 05:58:34,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:34,468 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-20 05:58:34,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:58:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-20 05:58:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:58:34,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:34,470 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:34,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:58:34,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:34,682 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-10-20 05:58:34,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:34,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602193752] [2020-10-20 05:58:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 05:58:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:34,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:58:34,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:34,838 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:58:34,839 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,853 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,853 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,853 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 05:58:34,890 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:58:34,891 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,910 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:58:34,911 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,922 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,924 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,924 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 05:58:34,961 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 05:58:34,962 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,976 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-20 05:58:34,977 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:34,983 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:34,983 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 05:58:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:35,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:35,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602193752] [2020-10-20 05:58:35,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:35,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 05:58:35,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395270446] [2020-10-20 05:58:35,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:58:35,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:35,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:58:35,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:58:35,282 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-10-20 05:58:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:37,286 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-10-20 05:58:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:58:37,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 05:58:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:37,288 INFO L225 Difference]: With dead ends: 149 [2020-10-20 05:58:37,288 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 05:58:37,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:58:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 05:58:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-10-20 05:58:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 05:58:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-10-20 05:58:37,297 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-10-20 05:58:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:37,298 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-10-20 05:58:37,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:58:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-10-20 05:58:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 05:58:37,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:37,299 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:37,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:58:37,501 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-10-20 05:58:37,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:37,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727256209] [2020-10-20 05:58:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 05:58:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:37,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:58:37,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:37,633 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:58:37,633 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,636 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:37,636 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:58:37,649 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 05:58:37,650 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:37,661 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 05:58:37,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-20 05:58:37,679 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,682 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:37,682 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:37,682 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-20 05:58:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:37,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:37,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727256209] [2020-10-20 05:58:37,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:37,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 05:58:37,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581528126] [2020-10-20 05:58:37,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:58:37,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:58:37,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:58:37,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:58:37,729 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-10-20 05:58:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:58:38,340 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-20 05:58:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:58:38,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 05:58:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:58:38,342 INFO L225 Difference]: With dead ends: 135 [2020-10-20 05:58:38,342 INFO L226 Difference]: Without dead ends: 135 [2020-10-20 05:58:38,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:58:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-20 05:58:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-10-20 05:58:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:58:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-20 05:58:38,351 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-10-20 05:58:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:58:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-20 05:58:38,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:58:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-20 05:58:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 05:58:38,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:58:38,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:58:38,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 05:58:38,563 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 05:58:38,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:58:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-10-20 05:58:38,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:58:38,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770955816] [2020-10-20 05:58:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 05:58:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:58:38,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:38,733 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:58:38,733 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,741 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:38,741 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,742 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-20 05:58:38,771 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 05:58:38,771 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 05:58:38,772 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,775 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:38,775 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-20 05:58:38,796 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 05:58:38,796 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:38,799 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:38,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 05:58:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:38,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:38,861 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:38,867 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:38,868 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:38,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:38,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-10-20 05:58:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770955816] [2020-10-20 05:58:38,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1355871798] [2020-10-20 05:58:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:58:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:39,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:58:39,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:39,251 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:58:39,251 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,263 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-20 05:58:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:58:39,296 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 05:58:39,296 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,302 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,303 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:13 [2020-10-20 05:58:39,359 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 05:58:39,360 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,363 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,363 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,363 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2020-10-20 05:58:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:39,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:39,376 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:39,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:39,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:39,431 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-10-20 05:58:39,432 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:39,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374635098] [2020-10-20 05:58:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:58:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:58:39,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:58:39,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:58:39,551 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 05:58:39,551 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,559 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,559 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-20 05:58:39,575 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-20 05:58:39,576 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2020-10-20 05:58:39,576 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,579 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-20 05:58:39,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 05:58:39,591 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,598 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,598 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:58:39,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 05:58:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:58:39,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:58:39,607 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:39,612 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:58:39,613 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:58:39,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-20 05:58:39,658 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2020-10-20 05:58:39,659 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:58:39,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:58:39,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:58:39,659 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:58:39,660 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:58:40,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:58:40,278 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:58:40,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:58:40 BoogieIcfgContainer [2020-10-20 05:58:40,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:58:40,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:58:40,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:58:40,279 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:58:40,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:58:32" (3/4) ... [2020-10-20 05:58:40,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:58:40,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:58:40,285 INFO L168 Benchmark]: Toolchain (without parser) took 9898.45 ms. Allocated memory was 35.7 MB in the beginning and 77.1 MB in the end (delta: 41.4 MB). Free memory was 7.2 MB in the beginning and 13.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,285 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 35.1 MB. Free memory was 13.9 MB in the beginning and 13.9 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.38 ms. Allocated memory was 35.7 MB in the beginning and 47.2 MB in the end (delta: 11.5 MB). Free memory was 6.3 MB in the beginning and 27.1 MB in the end (delta: -20.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,287 INFO L168 Benchmark]: Boogie Preprocessor took 95.05 ms. Allocated memory is still 47.2 MB. Free memory was 27.1 MB in the beginning and 23.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,288 INFO L168 Benchmark]: RCFGBuilder took 949.32 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 23.6 MB in the beginning and 18.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,288 INFO L168 Benchmark]: TraceAbstraction took 8253.03 ms. Allocated memory was 49.8 MB in the beginning and 77.1 MB in the end (delta: 27.3 MB). Free memory was 18.4 MB in the beginning and 14.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,289 INFO L168 Benchmark]: Witness Printer took 4.17 ms. Allocated memory is still 77.1 MB. Free memory was 14.2 MB in the beginning and 13.4 MB in the end (delta: 884.0 kB). Peak memory consumption was 884.0 kB. Max. memory is 14.3 GB. [2020-10-20 05:58:40,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 35.1 MB. Free memory was 13.9 MB in the beginning and 13.9 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 586.38 ms. Allocated memory was 35.7 MB in the beginning and 47.2 MB in the end (delta: 11.5 MB). Free memory was 6.3 MB in the beginning and 27.1 MB in the end (delta: -20.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 95.05 ms. Allocated memory is still 47.2 MB. Free memory was 27.1 MB in the beginning and 23.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 949.32 ms. Allocated memory was 47.2 MB in the beginning and 49.8 MB in the end (delta: 2.6 MB). Free memory was 23.6 MB in the beginning and 18.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8253.03 ms. Allocated memory was 49.8 MB in the beginning and 77.1 MB in the end (delta: 27.3 MB). Free memory was 18.4 MB in the beginning and 14.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.17 ms. Allocated memory is still 77.1 MB. Free memory was 14.2 MB in the beginning and 13.4 MB in the end (delta: 884.0 kB). Peak memory consumption was 884.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) [L537] List t; [L538] List p = a; [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 [L556] p->n = (void*)__VERIFIER_nondet_ulong() [L557] i = 0 [L558] y = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h == 1 [L561] i++ [L562] EXPR p->n [L562] p = p->n [L560] p->h - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 520 SDslu, 530 SDs, 0 SdLazy, 998 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 133 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 6260 SizeOfPredicates, 27 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...