./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0019-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/memsafety/test-0019-2.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 e0c6505355e23ab050a0b1754726876dca60bcf4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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/memsafety/test-0019-2.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 e0c6505355e23ab050a0b1754726876dca60bcf4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:00:59,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:00:59,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:00:59,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:00:59,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:00:59,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:00:59,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:00:59,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:00:59,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:00:59,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:00:59,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:00:59,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:00:59,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:00:59,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:00:59,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:00:59,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:00:59,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:00:59,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:00:59,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:00:59,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:00:59,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:00:59,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:00:59,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:00:59,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:00:59,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:00:59,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:00:59,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:00:59,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:00:59,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:00:59,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:00:59,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:00:59,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:00:59,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:00:59,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:00:59,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:00:59,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:00:59,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:00:59,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:00:59,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:00:59,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:00:59,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:00:59,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:00:59,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:00:59,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:00:59,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:00:59,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:00:59,229 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:00:59,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:00:59,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:00:59,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:00:59,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:00:59,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:00:59,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:00:59,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:00:59,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:00:59,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:00:59,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:00:59,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:00:59,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:00:59,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:00:59,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:00:59,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:00:59,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:00:59,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:00:59,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:00:59,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:00:59,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:00:59,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:00:59,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:00:59,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:00:59,239 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 -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2020-10-19 18:00:59,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:00:59,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:00:59,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:00:59,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:00:59,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:00:59,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2020-10-19 18:00:59,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3193d3828/4dc482c8f27741ebb420cffa7e5e8560/FLAG673854cf1 [2020-10-19 18:01:00,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:01:00,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2020-10-19 18:01:00,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3193d3828/4dc482c8f27741ebb420cffa7e5e8560/FLAG673854cf1 [2020-10-19 18:01:00,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3193d3828/4dc482c8f27741ebb420cffa7e5e8560 [2020-10-19 18:01:00,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:01:00,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:01:00,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:00,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:01:00,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:01:00,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:00" (1/1) ... [2020-10-19 18:01:00,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b8e356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:00, skipping insertion in model container [2020-10-19 18:01:00,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:00" (1/1) ... [2020-10-19 18:01:00,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:01:00,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:01:00,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:00,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:01:01,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:01,088 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:01:01,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01 WrapperNode [2020-10-19 18:01:01,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:01,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:01:01,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:01:01,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:01:01,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (1/1) ... [2020-10-19 18:01:01,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:01:01,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:01:01,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:01:01,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:01:01,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (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 [2020-10-19 18:01:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:01:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:01:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:01:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:01:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:01:01,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:01:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:01:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:01:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2020-10-19 18:01:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2020-10-19 18:01:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:01:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:01:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:01:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:01:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:01:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:01:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:01:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:01:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:01:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:01:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:01:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:01:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:01:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:01:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:01:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:01:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:01:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:01:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:01:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:01:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:01:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:01:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:01:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:01:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:01:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:01:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:01:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:01:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:01:01,234 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:01:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:01:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:01:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:01:01,235 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:01:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:01:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:01:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:01:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:01:01,236 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:01:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:01:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:01:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:01:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:01:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:01:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:01:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:01:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:01:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:01:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:01:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:01:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:01:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:01:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:01:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:01:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:01:01,240 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:01:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:01:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:01:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:01:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:01:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:01:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:01:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:01:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:01:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:01:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:01:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:01:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:01:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:01:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:01:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:01:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:01:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:01:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:01:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:01:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:01:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:01:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:01:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:01:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:01:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:01:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:01:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:01:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:01:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:01:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:01:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:01:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:01:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:01:01,248 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:01:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:01:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:01:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:01:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:01:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:01:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:01:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:01:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:01:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:01:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:01:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:01:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:01:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:01:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2020-10-19 18:01:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:01:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:01:01,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:01:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:01:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:01:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:01:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:01:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:01:01,839 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:01:01,840 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:01:01,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:01 BoogieIcfgContainer [2020-10-19 18:01:01,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:01:01,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:01:01,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:01:01,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:01:01,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:01:00" (1/3) ... [2020-10-19 18:01:01,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b324e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:01, skipping insertion in model container [2020-10-19 18:01:01,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:01" (2/3) ... [2020-10-19 18:01:01,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b324e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:01, skipping insertion in model container [2020-10-19 18:01:01,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:01" (3/3) ... [2020-10-19 18:01:01,864 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2020-10-19 18:01:01,877 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:01:01,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-10-19 18:01:01,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-10-19 18:01:01,922 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:01:01,923 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:01:01,923 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:01:01,923 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:01:01,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:01:01,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:01:01,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:01:01,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:01:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-19 18:01:01,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:01,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:01,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:01,956 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:01,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2062563848, now seen corresponding path program 1 times [2020-10-19 18:01:01,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:01,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368786292] [2020-10-19 18:01:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:02,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368786292] [2020-10-19 18:01:02,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:02,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:02,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206457556] [2020-10-19 18:01:02,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:02,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:02,321 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2020-10-19 18:01:02,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:02,625 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-10-19 18:01:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:01:02,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:01:02,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:02,638 INFO L225 Difference]: With dead ends: 61 [2020-10-19 18:01:02,638 INFO L226 Difference]: Without dead ends: 58 [2020-10-19 18:01:02,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:02,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-19 18:01:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-10-19 18:01:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-19 18:01:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-19 18:01:02,682 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2020-10-19 18:01:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:02,683 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-19 18:01:02,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-19 18:01:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:02,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:02,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:02,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:01:02,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:02,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2062563849, now seen corresponding path program 1 times [2020-10-19 18:01:02,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:02,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774238740] [2020-10-19 18:01:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:02,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774238740] [2020-10-19 18:01:02,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:02,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:02,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736881019] [2020-10-19 18:01:02,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:02,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:02,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:02,875 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 6 states. [2020-10-19 18:01:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:03,133 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-10-19 18:01:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:03,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:01:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:03,136 INFO L225 Difference]: With dead ends: 57 [2020-10-19 18:01:03,136 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 18:01:03,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 18:01:03,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-19 18:01:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 18:01:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-10-19 18:01:03,148 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 9 [2020-10-19 18:01:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:03,149 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-10-19 18:01:03,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-10-19 18:01:03,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:01:03,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:03,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:03,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:01:03,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2143934378, now seen corresponding path program 1 times [2020-10-19 18:01:03,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:03,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291953770] [2020-10-19 18:01:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:03,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291953770] [2020-10-19 18:01:03,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:03,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:01:03,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476956906] [2020-10-19 18:01:03,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:01:03,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:03,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:01:03,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:01:03,320 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 7 states. [2020-10-19 18:01:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:03,561 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-10-19 18:01:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:01:03,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-19 18:01:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:03,563 INFO L225 Difference]: With dead ends: 56 [2020-10-19 18:01:03,563 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 18:01:03,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 18:01:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-10-19 18:01:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-19 18:01:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-19 18:01:03,571 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 11 [2020-10-19 18:01:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:03,572 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-19 18:01:03,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:01:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-19 18:01:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:01:03,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:03,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:03,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:01:03,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash -129348870, now seen corresponding path program 1 times [2020-10-19 18:01:03,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:03,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856263736] [2020-10-19 18:01:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:03,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856263736] [2020-10-19 18:01:03,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:03,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:03,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392608249] [2020-10-19 18:01:03,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:03,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:03,707 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 9 states. [2020-10-19 18:01:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:04,065 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-10-19 18:01:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:01:04,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-19 18:01:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:04,066 INFO L225 Difference]: With dead ends: 51 [2020-10-19 18:01:04,066 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 18:01:04,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:01:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 18:01:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-19 18:01:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:01:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-19 18:01:04,080 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 16 [2020-10-19 18:01:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:04,081 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-19 18:01:04,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-19 18:01:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:01:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:04,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:04,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:01:04,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash -129348869, now seen corresponding path program 1 times [2020-10-19 18:01:04,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:04,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191322510] [2020-10-19 18:01:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:04,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191322510] [2020-10-19 18:01:04,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:04,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:01:04,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298145963] [2020-10-19 18:01:04,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:01:04,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:01:04,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:01:04,307 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 11 states. [2020-10-19 18:01:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:04,724 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-10-19 18:01:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:01:04,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-10-19 18:01:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:04,729 INFO L225 Difference]: With dead ends: 44 [2020-10-19 18:01:04,729 INFO L226 Difference]: Without dead ends: 44 [2020-10-19 18:01:04,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:01:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-19 18:01:04,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-19 18:01:04,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:01:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-19 18:01:04,734 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 16 [2020-10-19 18:01:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:04,735 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-19 18:01:04,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:01:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-19 18:01:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:01:04,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:04,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:04,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:01:04,736 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1752734705, now seen corresponding path program 1 times [2020-10-19 18:01:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:04,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634129141] [2020-10-19 18:01:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:04,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634129141] [2020-10-19 18:01:04,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:04,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:01:04,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929771115] [2020-10-19 18:01:04,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:01:04,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:01:04,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:04,883 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 12 states. [2020-10-19 18:01:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:05,327 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-19 18:01:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:01:05,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-19 18:01:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:05,329 INFO L225 Difference]: With dead ends: 43 [2020-10-19 18:01:05,329 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 18:01:05,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:01:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 18:01:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-19 18:01:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:01:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-10-19 18:01:05,339 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 21 [2020-10-19 18:01:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:05,339 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-10-19 18:01:05,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:01:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-10-19 18:01:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:01:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:05,341 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] [2020-10-19 18:01:05,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:01:05,341 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1499799070, now seen corresponding path program 1 times [2020-10-19 18:01:05,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:05,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934127125] [2020-10-19 18:01:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934127125] [2020-10-19 18:01:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:01:05,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121934485] [2020-10-19 18:01:05,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:01:05,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:05,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:01:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:05,606 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 12 states. [2020-10-19 18:01:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:06,034 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-10-19 18:01:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:01:06,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-10-19 18:01:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:06,036 INFO L225 Difference]: With dead ends: 42 [2020-10-19 18:01:06,036 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 18:01:06,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:01:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 18:01:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-19 18:01:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:01:06,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-19 18:01:06,041 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 22 [2020-10-19 18:01:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:06,042 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-19 18:01:06,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:01:06,042 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-19 18:01:06,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:01:06,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:06,043 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] [2020-10-19 18:01:06,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:01:06,044 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:06,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:06,044 INFO L82 PathProgramCache]: Analyzing trace with hash -750869007, now seen corresponding path program 1 times [2020-10-19 18:01:06,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:06,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943870898] [2020-10-19 18:01:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:06,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943870898] [2020-10-19 18:01:06,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:06,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:01:06,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578601290] [2020-10-19 18:01:06,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:01:06,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:06,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:01:06,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:06,225 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 12 states. [2020-10-19 18:01:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:06,647 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-19 18:01:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:01:06,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-19 18:01:06,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:06,648 INFO L225 Difference]: With dead ends: 41 [2020-10-19 18:01:06,649 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 18:01:06,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:01:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 18:01:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-19 18:01:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:01:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-19 18:01:06,661 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 23 [2020-10-19 18:01:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:06,663 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-19 18:01:06,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:01:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-19 18:01:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:01:06,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:06,664 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] [2020-10-19 18:01:06,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:01:06,665 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1802102656, now seen corresponding path program 1 times [2020-10-19 18:01:06,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:06,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963512838] [2020-10-19 18:01:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:06,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963512838] [2020-10-19 18:01:06,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:06,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:06,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930963208] [2020-10-19 18:01:06,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:06,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:06,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:06,768 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 6 states. [2020-10-19 18:01:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:06,962 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-19 18:01:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:06,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-19 18:01:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:06,965 INFO L225 Difference]: With dead ends: 40 [2020-10-19 18:01:06,965 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 18:01:06,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:01:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 18:01:06,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-19 18:01:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 18:01:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-19 18:01:06,970 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 24 [2020-10-19 18:01:06,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:06,970 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-19 18:01:06,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-19 18:01:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:01:06,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:06,972 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] [2020-10-19 18:01:06,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:01:06,972 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:06,973 INFO L82 PathProgramCache]: Analyzing trace with hash -30607405, now seen corresponding path program 1 times [2020-10-19 18:01:06,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:06,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106230610] [2020-10-19 18:01:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:07,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106230610] [2020-10-19 18:01:07,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:07,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:07,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349249946] [2020-10-19 18:01:07,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:07,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:07,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:07,059 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 6 states. [2020-10-19 18:01:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:07,234 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-19 18:01:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:07,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-19 18:01:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:07,236 INFO L225 Difference]: With dead ends: 39 [2020-10-19 18:01:07,236 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 18:01:07,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:01:07,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 18:01:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-19 18:01:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 18:01:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-19 18:01:07,240 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 25 [2020-10-19 18:01:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:07,240 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-19 18:01:07,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-19 18:01:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:01:07,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:07,241 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] [2020-10-19 18:01:07,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:01:07,242 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:07,242 INFO L82 PathProgramCache]: Analyzing trace with hash -993519269, now seen corresponding path program 1 times [2020-10-19 18:01:07,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:07,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336505753] [2020-10-19 18:01:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:07,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:07,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:07,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:01:07,311 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:01:07,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:01:07,332 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:01:07,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:01:07 BoogieIcfgContainer [2020-10-19 18:01:07,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:01:07,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:01:07,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:01:07,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:01:07,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:01" (3/4) ... [2020-10-19 18:01:07,352 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:01:07,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:01:07,355 INFO L168 Benchmark]: Toolchain (without parser) took 6925.58 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 286.8 MB). Free memory was 950.6 MB in the beginning and 1.2 GB in the end (delta: -256.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:07,355 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:07,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:07,357 INFO L168 Benchmark]: Boogie Preprocessor took 67.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:07,357 INFO L168 Benchmark]: RCFGBuilder took 685.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:07,358 INFO L168 Benchmark]: TraceAbstraction took 5502.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 126.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -129.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:07,359 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:07,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 653.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -197.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 685.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5502.02 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 126.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -129.0 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.70 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={3:0}] [L545] CALL alloc_data(&data) VAL [pdata={3:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={-1:0}, pdata={3:0}, pdata={3:0}] [L530] pdata->hi = malloc(24) VAL [malloc(16)={-1:0}, malloc(24)={-2:0}, pdata={3:0}, pdata={3:0}] [L545] RET alloc_data(&data) VAL [data={3:0}] [L546] CALL free_data(&data) VAL [data={3:0}] [L534] EXPR data->lo VAL [data={3:0}, data={3:0}, data->lo={-1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={3:0}, data={3:0}, data->hi={-2:0}, lo={-1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L540] data->lo = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L541] data->hi = (void *) 0 VAL [data={3:0}, data={3:0}, hi={-2:0}, lo={-1:0}] [L546] RET free_data(&data) VAL [data={3:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 505 SDslu, 541 SDs, 0 SdLazy, 1660 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, 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, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 17891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:01:09,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:01:09,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:01:09,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:01:09,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:01:09,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:01:09,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:01:09,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:01:09,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:01:09,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:01:09,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:01:09,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:01:09,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:01:09,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:01:09,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:01:09,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:01:09,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:01:09,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:01:09,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:01:09,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:01:09,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:01:09,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:01:09,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:01:09,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:01:09,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:01:09,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:01:09,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:01:09,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:01:09,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:01:09,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:01:09,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:01:09,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:01:09,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:01:09,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:01:09,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:01:09,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:01:09,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:01:09,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:01:09,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:01:09,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:01:09,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:01:09,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:01:09,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:01:09,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:01:09,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:01:09,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:01:09,313 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:01:09,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:01:09,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:01:09,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:01:09,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:01:09,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:01:09,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:01:09,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:01:09,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:01:09,316 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:01:09,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:01:09,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:01:09,316 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:01:09,317 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:01:09,317 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:01:09,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:01:09,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:01:09,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:01:09,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:01:09,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:01:09,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:01:09,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:01:09,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:01:09,320 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:01:09,320 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:01:09,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:01:09,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:01:09,321 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 -> e0c6505355e23ab050a0b1754726876dca60bcf4 [2020-10-19 18:01:09,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:01:09,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:01:09,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:01:09,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:01:09,675 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:01:09,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0019-2.i [2020-10-19 18:01:09,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb874ae3/800d780905354dc88993e59dc1092623/FLAG67c333014 [2020-10-19 18:01:10,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:01:10,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0019-2.i [2020-10-19 18:01:10,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb874ae3/800d780905354dc88993e59dc1092623/FLAG67c333014 [2020-10-19 18:01:10,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb874ae3/800d780905354dc88993e59dc1092623 [2020-10-19 18:01:10,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:01:10,577 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:01:10,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:10,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:01:10,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:01:10,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:10" (1/1) ... [2020-10-19 18:01:10,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f227d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:10, skipping insertion in model container [2020-10-19 18:01:10,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:10" (1/1) ... [2020-10-19 18:01:10,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:01:10,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:01:11,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:11,045 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:01:11,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:11,145 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:01:11,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11 WrapperNode [2020-10-19 18:01:11,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:11,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:01:11,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:01:11,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:01:11,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (1/1) ... [2020-10-19 18:01:11,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:01:11,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:01:11,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:01:11,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:01:11,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (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 [2020-10-19 18:01:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:01:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:01:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:01:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:01:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:01:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:01:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:01:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:01:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:01:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2020-10-19 18:01:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2020-10-19 18:01:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:01:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:01:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:01:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:01:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:01:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:01:11,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:01:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:01:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:01:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:01:11,280 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:01:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:01:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:01:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:01:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:01:11,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:01:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:01:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:01:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:01:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:01:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:01:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:01:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:01:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:01:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:01:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:01:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:01:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:01:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:01:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:01:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:01:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:01:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:01:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:01:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:01:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:01:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:01:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:01:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:01:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:01:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:01:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:01:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:01:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:01:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:01:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:01:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:01:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:01:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:01:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:01:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:01:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:01:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:01:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:01:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:01:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:01:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:01:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:01:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:01:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:01:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:01:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:01:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:01:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:01:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:01:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:01:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:01:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:01:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:01:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:01:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:01:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:01:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:01:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:01:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:01:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:01:11,294 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:01:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:01:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:01:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:01:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:01:11,295 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:01:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:01:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:01:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:01:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:01:11,296 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:01:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:01:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:01:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:01:11,297 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:01:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:01:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:01:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:01:11,298 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:01:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:01:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:01:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:01:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:01:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:01:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:01:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:01:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:01:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:01:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:01:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:01:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:01:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:01:11,301 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:01:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:01:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:01:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:01:11,302 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:01:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2020-10-19 18:01:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:01:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:01:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2020-10-19 18:01:11,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:01:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:01:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:01:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:01:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:01:11,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:01:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:01:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:01:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:01:12,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:01:12,043 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-19 18:01:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:12 BoogieIcfgContainer [2020-10-19 18:01:12,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:01:12,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:01:12,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:01:12,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:01:12,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:01:10" (1/3) ... [2020-10-19 18:01:12,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd4d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:12, skipping insertion in model container [2020-10-19 18:01:12,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:11" (2/3) ... [2020-10-19 18:01:12,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd4d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:12, skipping insertion in model container [2020-10-19 18:01:12,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:12" (3/3) ... [2020-10-19 18:01:12,056 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019-2.i [2020-10-19 18:01:12,068 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:01:12,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-10-19 18:01:12,089 INFO L253 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-10-19 18:01:12,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:01:12,107 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:01:12,107 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:01:12,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:01:12,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:01:12,108 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:01:12,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:01:12,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:01:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-19 18:01:12,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:12,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:12,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:12,135 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:12,141 INFO L82 PathProgramCache]: Analyzing trace with hash -658526433, now seen corresponding path program 1 times [2020-10-19 18:01:12,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:12,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893810238] [2020-10-19 18:01:12,152 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 [2020-10-19 18:01:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:01:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:12,394 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 [2020-10-19 18:01:12,394 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:12,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:12,415 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 [2020-10-19 18:01:12,415 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:12,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:12,425 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:12,425 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:01:12,506 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:12,507 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:01:12,508 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:12,521 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:12,528 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2020-10-19 18:01:12,530 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:12,550 INFO L625 ElimStorePlain]: treesize reduction 4, result has 77.8 percent of original size [2020-10-19 18:01:12,552 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:12,553 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-10-19 18:01:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:12,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:12,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:14,393 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-19 18:01:14,890 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-19 18:01:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:14,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893810238] [2020-10-19 18:01:14,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:14,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:01:14,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488935892] [2020-10-19 18:01:14,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:14,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:14,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:14,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:14,945 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 8 states. [2020-10-19 18:01:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:16,101 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-19 18:01:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:16,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-19 18:01:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:16,121 INFO L225 Difference]: With dead ends: 53 [2020-10-19 18:01:16,121 INFO L226 Difference]: Without dead ends: 50 [2020-10-19 18:01:16,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:01:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-19 18:01:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-19 18:01:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 18:01:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-19 18:01:16,166 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 9 [2020-10-19 18:01:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:16,167 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-19 18:01:16,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-19 18:01:16,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:16,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:16,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:16,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:01:16,374 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -658526434, now seen corresponding path program 1 times [2020-10-19 18:01:16,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:16,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336434284] [2020-10-19 18:01:16,376 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 [2020-10-19 18:01:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:16,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:01:16,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:16,512 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 [2020-10-19 18:01:16,513 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:16,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:16,516 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:16,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:01:16,548 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:16,549 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 28 [2020-10-19 18:01:16,551 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:16,569 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:01:16,570 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:16,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-10-19 18:01:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:16,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:16,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336434284] [2020-10-19 18:01:16,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:16,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:01:16,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274466322] [2020-10-19 18:01:16,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:01:16,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:16,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:01:16,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:01:16,626 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 5 states. [2020-10-19 18:01:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:16,798 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-19 18:01:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:01:16,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:01:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:16,801 INFO L225 Difference]: With dead ends: 48 [2020-10-19 18:01:16,801 INFO L226 Difference]: Without dead ends: 48 [2020-10-19 18:01:16,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-19 18:01:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-19 18:01:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-19 18:01:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2020-10-19 18:01:16,810 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 9 [2020-10-19 18:01:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:16,810 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2020-10-19 18:01:16,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:01:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2020-10-19 18:01:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:01:16,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:16,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:17,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:01:17,024 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:17,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1483709952, now seen corresponding path program 1 times [2020-10-19 18:01:17,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:17,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754877270] [2020-10-19 18:01:17,026 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 [2020-10-19 18:01:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:01:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:17,204 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 [2020-10-19 18:01:17,205 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,212 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,216 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 [2020-10-19 18:01:17,217 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,227 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:01:17,284 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,285 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:01:17,286 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,299 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,304 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2020-10-19 18:01:17,305 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,327 INFO L625 ElimStorePlain]: treesize reduction 4, result has 77.8 percent of original size [2020-10-19 18:01:17,329 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:17,329 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-10-19 18:01:17,403 INFO L441 ElimStorePlain]: Different costs {1=[|v_#valid_57|], 3=[|v_#length_42|]} [2020-10-19 18:01:17,419 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,420 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:01:17,421 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,443 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,475 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:17,476 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 46 [2020-10-19 18:01:17,478 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:17,517 INFO L625 ElimStorePlain]: treesize reduction 24, result has 51.0 percent of original size [2020-10-19 18:01:17,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:17,521 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:34, output treesize:16 [2020-10-19 18:01:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:17,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:17,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:19,995 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-19 18:01:19,999 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:20,033 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:20,034 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:01:20,035 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:20,049 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:20,049 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:01:20,050 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:20,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:20,092 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2020-10-19 18:01:20,093 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:22 [2020-10-19 18:01:20,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:21,504 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-19 18:01:21,979 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-19 18:01:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:22,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754877270] [2020-10-19 18:01:22,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:22,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2020-10-19 18:01:22,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606210543] [2020-10-19 18:01:22,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:01:22,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:22,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:01:22,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2020-10-19 18:01:22,031 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 11 states. [2020-10-19 18:01:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:22,692 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-19 18:01:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:22,692 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-19 18:01:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:22,694 INFO L225 Difference]: With dead ends: 47 [2020-10-19 18:01:22,694 INFO L226 Difference]: Without dead ends: 47 [2020-10-19 18:01:22,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=43, Invalid=112, Unknown=1, NotChecked=0, Total=156 [2020-10-19 18:01:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-19 18:01:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-19 18:01:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-19 18:01:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-19 18:01:22,701 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 11 [2020-10-19 18:01:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:22,701 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-19 18:01:22,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:01:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-19 18:01:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:01:22,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:22,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:22,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:01:22,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash -854908678, now seen corresponding path program 1 times [2020-10-19 18:01:22,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:22,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428706898] [2020-10-19 18:01:22,908 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 [2020-10-19 18:01:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:23,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:01:23,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:23,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:23,120 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:23,121 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 16 [2020-10-19 18:01:23,123 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:23,125 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:23,127 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:23,128 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:23,128 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2020-10-19 18:01:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:23,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428706898] [2020-10-19 18:01:23,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:23,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 18:01:23,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582178626] [2020-10-19 18:01:23,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:01:23,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:23,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:01:23,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:01:23,137 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 7 states. [2020-10-19 18:01:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:23,416 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-10-19 18:01:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:23,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-19 18:01:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:23,419 INFO L225 Difference]: With dead ends: 51 [2020-10-19 18:01:23,419 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 18:01:23,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 18:01:23,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-19 18:01:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:01:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-19 18:01:23,427 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 16 [2020-10-19 18:01:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:23,428 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-19 18:01:23,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:01:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-19 18:01:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:01:23,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:23,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:23,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:01:23,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:23,632 INFO L82 PathProgramCache]: Analyzing trace with hash -854908677, now seen corresponding path program 1 times [2020-10-19 18:01:23,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:23,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894174584] [2020-10-19 18:01:23,633 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 [2020-10-19 18:01:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:23,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:01:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:23,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:24,102 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,116 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-10-19 18:01:24,117 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:24,133 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:01:24,134 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:24,183 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:24,184 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-10-19 18:01:24,184 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:25 [2020-10-19 18:01:24,573 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:24,573 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:01:24,574 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,576 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,577 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:24,600 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:24,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:01:24,601 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,603 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,604 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:24,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:24,686 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,689 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-10-19 18:01:24,689 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:56, output treesize:64 [2020-10-19 18:01:24,690 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,691 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,694 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:24,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:25,264 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2020-10-19 18:01:25,267 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:25,747 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-10-19 18:01:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:26,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894174584] [2020-10-19 18:01:26,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:26,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2020-10-19 18:01:26,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662251117] [2020-10-19 18:01:26,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 18:01:26,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:26,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 18:01:26,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:01:26,132 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2020-10-19 18:01:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:27,081 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-19 18:01:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:01:27,083 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-10-19 18:01:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:27,086 INFO L225 Difference]: With dead ends: 41 [2020-10-19 18:01:27,086 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 18:01:27,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:01:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 18:01:27,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-19 18:01:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:01:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-19 18:01:27,098 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 16 [2020-10-19 18:01:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:27,099 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-19 18:01:27,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 18:01:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-19 18:01:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:01:27,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:27,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:27,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:01:27,302 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:27,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:27,302 INFO L82 PathProgramCache]: Analyzing trace with hash -383997787, now seen corresponding path program 1 times [2020-10-19 18:01:27,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:27,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882356169] [2020-10-19 18:01:27,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:01:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:01:27,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:27,451 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 [2020-10-19 18:01:27,451 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:27,455 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:27,455 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:27,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-19 18:01:27,534 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 [2020-10-19 18:01:27,534 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:27,537 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:27,537 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:27,537 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-19 18:01:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:27,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:27,687 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 38 treesize of output 32 [2020-10-19 18:01:27,688 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:01:27,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:27,696 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-19 18:01:27,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:14 [2020-10-19 18:01:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:27,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882356169] [2020-10-19 18:01:27,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:27,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2020-10-19 18:01:27,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964407740] [2020-10-19 18:01:27,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:01:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:01:27,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:01:27,706 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-10-19 18:01:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:28,269 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-10-19 18:01:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:01:28,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-19 18:01:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:28,274 INFO L225 Difference]: With dead ends: 42 [2020-10-19 18:01:28,274 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 18:01:28,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:01:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 18:01:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-19 18:01:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-19 18:01:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-19 18:01:28,279 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 21 [2020-10-19 18:01:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:28,280 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-19 18:01:28,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:01:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-19 18:01:28,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:01:28,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:28,281 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] [2020-10-19 18:01:28,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:01:28,482 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:28,483 INFO L82 PathProgramCache]: Analyzing trace with hash 980970590, now seen corresponding path program 1 times [2020-10-19 18:01:28,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:28,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612359585] [2020-10-19 18:01:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:01:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:28,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:01:28,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:28,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612359585] [2020-10-19 18:01:28,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:01:28,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2048777382] [2020-10-19 18:01:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:01:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:28,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:01:28,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:28,880 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 [2020-10-19 18:01:28,881 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:28,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:28,891 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:28,891 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:01:29,110 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:29,111 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2020-10-19 18:01:29,118 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:29,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:29,121 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:29,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2020-10-19 18:01:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:29,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:29,744 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:01:29,744 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 114 [2020-10-19 18:01:29,746 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,748 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:29,767 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,768 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:29,771 INFO L545 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:29,994 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-19 18:01:29,996 INFO L625 ElimStorePlain]: treesize reduction 22, result has 80.7 percent of original size [2020-10-19 18:01:29,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,998 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:29,999 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,000 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:30,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:92 [2020-10-19 18:01:30,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,001 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,001 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,146 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-19 18:01:30,147 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-10-19 18:01:30,148 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-19 18:01:30,155 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-10-19 18:01:30,156 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,156 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,157 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-19 18:01:30,158 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,165 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,166 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,166 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,169 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,170 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,171 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,172 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,173 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,175 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,177 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,180 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,180 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:30,181 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:30,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:30,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 12] imperfect sequences [] total 23 [2020-10-19 18:01:30,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251775974] [2020-10-19 18:01:30,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 18:01:30,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 18:01:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2020-10-19 18:01:30,276 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 24 states. [2020-10-19 18:01:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:31,821 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-19 18:01:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:01:31,822 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2020-10-19 18:01:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:31,823 INFO L225 Difference]: With dead ends: 40 [2020-10-19 18:01:31,823 INFO L226 Difference]: Without dead ends: 40 [2020-10-19 18:01:31,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 18:01:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-19 18:01:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-19 18:01:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 18:01:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-19 18:01:31,829 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 22 [2020-10-19 18:01:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:31,830 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-19 18:01:31,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 18:01:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-19 18:01:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:01:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:31,831 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] [2020-10-19 18:01:32,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3 [2020-10-19 18:01:32,233 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash 345317319, now seen corresponding path program 1 times [2020-10-19 18:01:32,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:32,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355568143] [2020-10-19 18:01:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:01:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:32,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:01:32,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:32,360 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 [2020-10-19 18:01:32,361 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,368 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:32,369 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:01:32,386 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 [2020-10-19 18:01:32,386 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:32,393 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:01:32,465 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 [2020-10-19 18:01:32,465 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:32,467 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:32,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:5 [2020-10-19 18:01:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:32,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:32,675 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 46 treesize of output 40 [2020-10-19 18:01:32,676 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:32,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:32,708 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:32,708 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:40 [2020-10-19 18:01:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:32,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355568143] [2020-10-19 18:01:32,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:32,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 11 [2020-10-19 18:01:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100496717] [2020-10-19 18:01:32,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:01:32,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:01:32,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:32,811 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2020-10-19 18:01:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:33,597 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-19 18:01:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:01:33,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-19 18:01:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:33,600 INFO L225 Difference]: With dead ends: 39 [2020-10-19 18:01:33,600 INFO L226 Difference]: Without dead ends: 39 [2020-10-19 18:01:33,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:01:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-19 18:01:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-19 18:01:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 18:01:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-19 18:01:33,604 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 23 [2020-10-19 18:01:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:33,605 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-19 18:01:33,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:01:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-19 18:01:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:01:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:33,606 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] [2020-10-19 18:01:33,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:01:33,809 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:33,810 INFO L82 PathProgramCache]: Analyzing trace with hash 901678754, now seen corresponding path program 1 times [2020-10-19 18:01:33,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:33,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437674330] [2020-10-19 18:01:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:01:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:01:33,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:33,942 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 [2020-10-19 18:01:33,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:33,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:33,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:33,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:01:33,968 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 [2020-10-19 18:01:33,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:33,977 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:33,978 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:33,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2020-10-19 18:01:34,002 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:34,003 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2020-10-19 18:01:34,003 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:34,013 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,014 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:15 [2020-10-19 18:01:34,045 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-10-19 18:01:34,045 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 22 treesize of output 21 [2020-10-19 18:01:34,046 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:34,055 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:14 [2020-10-19 18:01:34,234 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:01:34,235 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 11 [2020-10-19 18:01:34,235 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:34,239 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:34,239 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:4 [2020-10-19 18:01:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:34,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:37,406 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:01:37,407 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 826 treesize of output 746 [2020-10-19 18:01:37,417 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 18:01:37,642 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 21 [2020-10-19 18:01:37,643 INFO L625 ElimStorePlain]: treesize reduction 655, result has 3.2 percent of original size [2020-10-19 18:01:37,643 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:37,644 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:37,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:47, output treesize:22 [2020-10-19 18:01:37,645 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:01:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:37,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437674330] [2020-10-19 18:01:37,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 18 [2020-10-19 18:01:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038375543] [2020-10-19 18:01:37,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 18:01:37,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 18:01:37,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=265, Unknown=1, NotChecked=0, Total=306 [2020-10-19 18:01:37,747 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 18 states. [2020-10-19 18:01:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:38,697 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-10-19 18:01:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:01:38,698 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-10-19 18:01:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:38,699 INFO L225 Difference]: With dead ends: 27 [2020-10-19 18:01:38,699 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 18:01:38,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=107, Invalid=594, Unknown=1, NotChecked=0, Total=702 [2020-10-19 18:01:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 18:01:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-19 18:01:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:01:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-10-19 18:01:38,703 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 26 [2020-10-19 18:01:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:38,703 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-10-19 18:01:38,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 18:01:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-10-19 18:01:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:01:38,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:38,705 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] [2020-10-19 18:01:38,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:01:38,909 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, free_dataErr8ASSERT_VIOLATIONMEMORY_FREE, free_dataErr7ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6ASSERT_VIOLATIONMEMORY_FREE, free_dataErr12REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr4ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5ASSERT_VIOLATIONMEMORY_FREE, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr3REQUIRES_VIOLATION, free_dataErr13REQUIRES_VIOLATION, free_dataErr2REQUIRES_VIOLATION]=== [2020-10-19 18:01:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:38,910 INFO L82 PathProgramCache]: Analyzing trace with hash 856988955, now seen corresponding path program 1 times [2020-10-19 18:01:38,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555851681] [2020-10-19 18:01:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:01:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:39,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:39,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:39,162 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:01:39,162 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:01:39,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:01:39,386 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:01:39,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:01:39 BoogieIcfgContainer [2020-10-19 18:01:39,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:01:39,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:01:39,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:01:39,405 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:01:39,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:12" (3/4) ... [2020-10-19 18:01:39,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:01:39,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:01:39,411 INFO L168 Benchmark]: Toolchain (without parser) took 28840.80 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 302.0 MB). Free memory was 960.0 MB in the beginning and 1.3 GB in the end (delta: -305.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:39,411 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:39,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:39,412 INFO L168 Benchmark]: Boogie Preprocessor took 65.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:39,412 INFO L168 Benchmark]: RCFGBuilder took 833.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:39,413 INFO L168 Benchmark]: TraceAbstraction took 27357.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -214.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:39,413 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:39,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 567.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 833.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 52.4 MB). Peak memory consumption was 52.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27357.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -214.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 4.87 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 543. Possible FailurePath: [L544] TData data; VAL [data={15:0}] [L545] CALL alloc_data(&data) VAL [pdata={15:0}] [L529] pdata->lo = malloc(16) VAL [malloc(16)={1:0}, pdata={15:0}, pdata={15:0}] [L530] pdata->hi = malloc(24) VAL [malloc(16)={1:0}, malloc(24)={2:0}, pdata={15:0}, pdata={15:0}] [L545] RET alloc_data(&data) VAL [data={15:0}] [L546] CALL free_data(&data) VAL [data={15:0}] [L534] EXPR data->lo VAL [data={15:0}, data={15:0}, data->lo={1:0}] [L534] void *lo = data->lo; [L535] EXPR data->hi VAL [data={15:0}, data={15:0}, data->hi={2:0}, lo={1:0}] [L535] void *hi = data->hi; [L536] COND FALSE !(lo == hi) VAL [data={15:0}, data={15:0}, hi={2:0}, lo={1:0}] [L540] data->lo = (void *) 0 VAL [data={15:0}, data={15:0}, hi={2:0}, lo={1:0}] [L541] data->hi = (void *) 0 VAL [data={15:0}, data={15:0}, hi={2:0}, lo={1:0}] [L546] RET free_data(&data) VAL [data={15:0}] [L547] return 0; [L547] return 0; VAL [\result=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 80 locations, 20 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 255 SDtfs, 346 SDslu, 1077 SDs, 0 SdLazy, 1436 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 201 SyntacticMatches, 9 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, 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, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 288 ConstructedInterpolants, 19 QuantifiedInterpolants, 39827 SizeOfPredicates, 88 NumberOfNonLiveVariables, 993 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...