./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list_flag-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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list_flag-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 e2748dac41bc6cdd06fa5d8793326edbc7d40c79 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:46:31,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:46:31,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:46:31,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:46:31,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:46:31,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:46:31,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:46:31,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:46:31,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:46:31,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:46:31,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:46:31,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:46:31,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:46:31,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:46:31,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:46:31,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:46:31,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:46:31,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:46:31,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:46:31,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:46:31,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:46:31,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:46:31,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:46:31,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:46:31,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:46:31,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:46:31,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:46:31,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:46:31,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:46:31,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:46:31,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:31,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:31,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:31,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:31,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:31,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:31,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:31,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:31,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:31,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:31,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:31,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:46:31,618 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:31,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:31,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:31,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:31,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:31,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:31,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:31,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:31,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:31,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:31,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:31,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:31,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:31,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:31,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:31,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:31,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:31,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:31,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:31,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:31,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:31,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:31,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:31,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:31,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:31,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:46:31,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:46:31,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:31,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-10-26 03:46:31,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:32,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:32,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:32,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:32,025 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:32,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2020-10-26 03:46:32,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61125a89f/f87c7331c9d94038a6294cbdf1a1ae96/FLAG35a297af1 [2020-10-26 03:46:32,884 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:32,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2020-10-26 03:46:32,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61125a89f/f87c7331c9d94038a6294cbdf1a1ae96/FLAG35a297af1 [2020-10-26 03:46:33,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61125a89f/f87c7331c9d94038a6294cbdf1a1ae96 [2020-10-26 03:46:33,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:33,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:33,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:33,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:33,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:33,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@430cfc51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33, skipping insertion in model container [2020-10-26 03:46:33,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:33,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:33,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:33,690 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:33,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:33,820 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:33,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33 WrapperNode [2020-10-26 03:46:33,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:33,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:33,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:33,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:33,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... [2020-10-26 03:46:33,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:33,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:33,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:33,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:33,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:33,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:33,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:33,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:33,990 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:33,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:33,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:33,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:33,997 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:33,997 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:34,003 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:34,008 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:34,008 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:34,008 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:34,009 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:34,009 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:34,013 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:34,013 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:34,022 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:46:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:46:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:46:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:34,491 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:34,711 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:34,712 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:46:34,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:34 BoogieIcfgContainer [2020-10-26 03:46:34,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:34,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:34,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:34,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:34,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:33" (1/3) ... [2020-10-26 03:46:34,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68300bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:34, skipping insertion in model container [2020-10-26 03:46:34,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:33" (2/3) ... [2020-10-26 03:46:34,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68300bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:34, skipping insertion in model container [2020-10-26 03:46:34,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:34" (3/3) ... [2020-10-26 03:46:34,725 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-10-26 03:46:34,737 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:34,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-26 03:46:34,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-26 03:46:34,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:34,780 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:34,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:34,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:34,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:34,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:34,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:34,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-26 03:46:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:34,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:34,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:34,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:34,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:34,817 INFO L82 PathProgramCache]: Analyzing trace with hash 884508361, now seen corresponding path program 1 times [2020-10-26 03:46:34,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:34,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265114332] [2020-10-26 03:46:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:35,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265114332] [2020-10-26 03:46:35,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:35,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:46:35,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942291050] [2020-10-26 03:46:35,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:46:35,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:35,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:46:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:46:35,078 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-10-26 03:46:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:35,246 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-26 03:46:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:46:35,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 03:46:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:35,256 INFO L225 Difference]: With dead ends: 64 [2020-10-26 03:46:35,256 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 03:46:35,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:46:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 03:46:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-26 03:46:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 03:46:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-26 03:46:35,297 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 10 [2020-10-26 03:46:35,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-26 03:46:35,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:46:35,298 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-26 03:46:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:35,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:35,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:35,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:46:35,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:35,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921759, now seen corresponding path program 1 times [2020-10-26 03:46:35,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:35,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042210269] [2020-10-26 03:46:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:35,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042210269] [2020-10-26 03:46:35,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:35,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:35,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267060989] [2020-10-26 03:46:35,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:35,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:35,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:35,412 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-10-26 03:46:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:35,600 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-10-26 03:46:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:35,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:35,603 INFO L225 Difference]: With dead ends: 65 [2020-10-26 03:46:35,604 INFO L226 Difference]: Without dead ends: 65 [2020-10-26 03:46:35,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:35,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-26 03:46:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-10-26 03:46:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-26 03:46:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-26 03:46:35,613 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2020-10-26 03:46:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:35,614 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-26 03:46:35,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-26 03:46:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:46:35,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:35,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:35,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:46:35,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:35,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921760, now seen corresponding path program 1 times [2020-10-26 03:46:35,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:35,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830997600] [2020-10-26 03:46:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:46:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:35,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830997600] [2020-10-26 03:46:35,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:35,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:46:35,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585943692] [2020-10-26 03:46:35,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:46:35,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:46:35,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:46:35,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:35,725 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2020-10-26 03:46:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:35,937 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-26 03:46:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:35,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:46:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:35,939 INFO L225 Difference]: With dead ends: 77 [2020-10-26 03:46:35,940 INFO L226 Difference]: Without dead ends: 77 [2020-10-26 03:46:35,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-26 03:46:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-26 03:46:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-26 03:46:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-26 03:46:35,956 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 11 [2020-10-26 03:46:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:35,957 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-26 03:46:35,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:46:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-26 03:46:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 03:46:35,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:35,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:35,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:46:35,958 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash -590364418, now seen corresponding path program 1 times [2020-10-26 03:46:35,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:46:35,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681863883] [2020-10-26 03:46:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:46:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:35,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:36,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:36,038 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:46:36,038 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:46:36,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:46:36,052 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:46:36,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:46:36 BoogieIcfgContainer [2020-10-26 03:46:36,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:46:36,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:46:36,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:46:36,071 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:46:36,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:34" (3/4) ... [2020-10-26 03:46:36,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:46:36,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:46:36,086 INFO L168 Benchmark]: Toolchain (without parser) took 2915.51 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 22.6 MB in the beginning and 56.6 MB in the end (delta: -34.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:36,087 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 24.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:36,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.83 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 36.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:36,093 INFO L168 Benchmark]: Boogie Preprocessor took 67.65 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 33.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:36,094 INFO L168 Benchmark]: RCFGBuilder took 822.80 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 49.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:36,096 INFO L168 Benchmark]: TraceAbstraction took 1353.99 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.9 MB in the beginning and 57.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:36,097 INFO L168 Benchmark]: Witness Printer took 10.58 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 56.6 MB in the end (delta: 645.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:36,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 24.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.83 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.9 MB in the beginning and 36.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.65 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 33.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 822.80 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 49.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1353.99 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.9 MB in the beginning and 57.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 10.58 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 56.6 MB in the end (delta: 645.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L536] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 194 SDslu, 42 SDs, 0 SdLazy, 277 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.2.0-5485861 [2020-10-26 03:46:38,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:46:38,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:46:38,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:46:38,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:46:38,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:46:38,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:46:38,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:46:38,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:46:38,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:46:38,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:46:38,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:46:38,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:46:38,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:46:38,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:46:38,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:46:38,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:46:38,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:46:38,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:46:38,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:46:38,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:46:38,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:46:38,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:46:38,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:46:38,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:46:38,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:46:38,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:46:38,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:46:38,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:46:38,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:46:38,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:46:38,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:46:38,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:46:38,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:46:38,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:46:38,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:46:38,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:46:38,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:46:38,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:46:38,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:46:38,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:46:38,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-26 03:46:38,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:46:38,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:46:38,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:46:38,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:46:38,977 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:46:38,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:46:38,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:46:38,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:46:38,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:46:38,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:46:38,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:46:38,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:46:38,981 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:46:38,981 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:46:38,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:46:38,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:46:38,982 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-26 03:46:38,982 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-26 03:46:38,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:46:38,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:46:38,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:46:38,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:46:38,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:46:38,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:46:38,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:38,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:46:38,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:46:38,985 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-26 03:46:38,985 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-26 03:46:38,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:46:38,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-26 03:46:38,986 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-10-26 03:46:39,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:46:39,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:46:39,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:46:39,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:46:39,432 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:46:39,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2020-10-26 03:46:39,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad36d0f2c/ed897f46b2e54120ac1482b92938b05e/FLAG982807d09 [2020-10-26 03:46:40,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:46:40,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2020-10-26 03:46:40,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad36d0f2c/ed897f46b2e54120ac1482b92938b05e/FLAG982807d09 [2020-10-26 03:46:40,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad36d0f2c/ed897f46b2e54120ac1482b92938b05e [2020-10-26 03:46:40,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:46:40,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:46:40,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:40,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:46:40,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:46:40,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:40" (1/1) ... [2020-10-26 03:46:40,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d726d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:40, skipping insertion in model container [2020-10-26 03:46:40,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:46:40" (1/1) ... [2020-10-26 03:46:40,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:46:40,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:46:41,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:41,027 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:46:41,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:46:41,196 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:46:41,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41 WrapperNode [2020-10-26 03:46:41,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:46:41,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:46:41,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:46:41,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:46:41,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... [2020-10-26 03:46:41,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:46:41,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:46:41,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:46:41,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:46:41,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:46:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:46:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:46:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:46:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:46:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:46:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:46:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:46:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:46:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:46:41,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:46:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:46:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:46:41,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:46:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:46:41,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:46:41,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:46:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:46:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:46:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:46:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:46:41,391 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:46:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:46:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:46:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:46:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:46:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:46:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:46:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:46:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:46:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:46:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:46:41,395 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:46:41,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:46:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:46:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:46:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:46:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:46:41,397 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:46:41,398 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:46:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:46:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:46:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:46:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:46:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:46:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:46:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:46:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:46:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:46:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:46:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:46:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:46:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:46:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:46:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:46:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:46:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:46:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:46:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:46:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:46:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:46:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:46:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:46:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:46:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:46:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:46:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:46:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:46:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:46:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:46:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:46:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:46:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:46:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:46:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:46:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:46:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:46:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-26 03:46:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:46:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:46:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-26 03:46:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:46:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-26 03:46:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:46:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-26 03:46:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-26 03:46:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-26 03:46:41,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:46:42,033 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:46:42,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:46:42,400 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:46:42,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:42 BoogieIcfgContainer [2020-10-26 03:46:42,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:46:42,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:46:42,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:46:42,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:46:42,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:46:40" (1/3) ... [2020-10-26 03:46:42,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604b2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:42, skipping insertion in model container [2020-10-26 03:46:42,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:46:41" (2/3) ... [2020-10-26 03:46:42,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604b2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:46:42, skipping insertion in model container [2020-10-26 03:46:42,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:42" (3/3) ... [2020-10-26 03:46:42,412 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-10-26 03:46:42,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:46:42,433 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-26 03:46:42,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-26 03:46:42,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:46:42,474 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:46:42,474 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:46:42,474 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:46:42,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:46:42,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:46:42,474 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:46:42,474 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:46:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-26 03:46:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:42,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:42,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:42,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1710436202, now seen corresponding path program 1 times [2020-10-26 03:46:42,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:42,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060313056] [2020-10-26 03:46:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:42,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-26 03:46:42,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:42,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:42,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060313056] [2020-10-26 03:46:42,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:42,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-26 03:46:42,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413394153] [2020-10-26 03:46:42,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 03:46:42,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 03:46:43,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 03:46:43,003 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-10-26 03:46:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:43,046 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-26 03:46:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 03:46:43,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-26 03:46:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:43,058 INFO L225 Difference]: With dead ends: 63 [2020-10-26 03:46:43,059 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 03:46:43,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 03:46:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 03:46:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-26 03:46:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 03:46:43,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-26 03:46:43,110 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 10 [2020-10-26 03:46:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:43,111 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-26 03:46:43,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 03:46:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-26 03:46:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:43,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:43,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:43,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-26 03:46:43,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:43,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435241, now seen corresponding path program 1 times [2020-10-26 03:46:43,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:43,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477143605] [2020-10-26 03:46:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:43,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 03:46:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:43,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:43,678 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:43,684 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:43,684 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:43,685 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-26 03:46:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:43,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:43,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477143605] [2020-10-26 03:46:43,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:43,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-26 03:46:43,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087105705] [2020-10-26 03:46:43,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:46:43,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:43,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:46:43,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:46:43,733 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-10-26 03:46:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:44,086 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-26 03:46:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:46:44,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:46:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:44,091 INFO L225 Difference]: With dead ends: 63 [2020-10-26 03:46:44,091 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 03:46:44,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:46:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 03:46:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2020-10-26 03:46:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 03:46:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-26 03:46:44,102 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 10 [2020-10-26 03:46:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:44,102 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-26 03:46:44,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:46:44,102 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-26 03:46:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:46:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:44,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:44,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-26 03:46:44,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435242, now seen corresponding path program 1 times [2020-10-26 03:46:44,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:44,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229780744] [2020-10-26 03:46:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:46:44,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:46:44,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:46:44,653 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:46:44,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:46:44,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:46:44,666 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:46:44,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:46:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:44,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-26 03:46:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:46:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229780744] [2020-10-26 03:46:44,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:46:44,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-26 03:46:44,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11291971] [2020-10-26 03:46:44,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:46:44,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-26 03:46:44,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:46:44,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:46:44,859 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-10-26 03:46:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:46:45,427 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-26 03:46:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:46:45,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 03:46:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:46:45,431 INFO L225 Difference]: With dead ends: 74 [2020-10-26 03:46:45,431 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 03:46:45,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:46:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 03:46:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-10-26 03:46:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 03:46:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-26 03:46:45,441 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 10 [2020-10-26 03:46:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:46:45,441 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-26 03:46:45,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:46:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-26 03:46:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:46:45,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:46:45,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:46:45,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-26 03:46:45,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-26 03:46:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:46:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash -544900418, now seen corresponding path program 1 times [2020-10-26 03:46:45,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-26 03:46:45,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056155403] [2020-10-26 03:46:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-26 03:46:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:45,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:46:46,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:46:46,087 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-26 03:46:46,088 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:46:46,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-26 03:46:46,326 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-26 03:46:46,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:46:46 BoogieIcfgContainer [2020-10-26 03:46:46,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:46:46,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:46:46,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:46:46,343 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:46:46,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:46:42" (3/4) ... [2020-10-26 03:46:46,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 03:46:46,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:46:46,349 INFO L168 Benchmark]: Toolchain (without parser) took 5806.26 ms. Allocated memory was 46.1 MB in the beginning and 83.9 MB in the end (delta: 37.7 MB). Free memory was 22.1 MB in the beginning and 44.5 MB in the end (delta: -22.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:46,350 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:46,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.23 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:46,352 INFO L168 Benchmark]: Boogie Preprocessor took 85.74 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 40.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:46,353 INFO L168 Benchmark]: RCFGBuilder took 1117.34 ms. Allocated memory is still 56.6 MB. Free memory was 40.0 MB in the beginning and 37.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:46,354 INFO L168 Benchmark]: TraceAbstraction took 3937.75 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 36.8 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:46:46,354 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 83.9 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:46:46,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 643.23 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.74 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 40.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1117.34 ms. Allocated memory is still 56.6 MB. Free memory was 40.0 MB in the beginning and 37.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3937.75 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 36.8 MB in the beginning and 44.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.83 ms. Allocated memory is still 83.9 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L536] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 88 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 215 SDslu, 46 SDs, 0 SdLazy, 108 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1494 SizeOfPredicates, 8 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...