./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer --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=/tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer --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-a4ecdab [2020-11-29 19:25:29,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:25:29,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:25:29,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:25:29,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:25:29,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:25:29,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:25:29,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:25:29,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:25:29,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:25:29,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:25:29,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:25:29,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:25:29,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:25:29,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:25:29,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:25:29,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:25:29,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:25:29,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:25:29,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:25:29,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:25:29,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:25:29,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:25:29,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:25:29,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:25:29,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:25:29,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:25:29,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:25:29,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:25:29,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:25:29,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:25:29,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:25:29,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:25:29,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:25:29,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:25:29,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:25:29,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:25:29,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:25:29,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:25:29,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:25:29,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:25:29,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 19:25:29,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:25:29,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:25:29,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:25:29,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:25:29,617 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:25:29,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:25:29,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:25:29,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:25:29,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:25:29,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:25:29,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:25:29,619 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:25:29,620 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:25:29,620 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:25:29,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:25:29,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:25:29,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:25:29,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:25:29,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:25:29,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:25:29,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:25:29,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:25:29,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:25:29,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:25:29,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:25:29,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:25:29,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:25:29,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:25:29,624 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:/tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-11-29 19:25:29,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:25:30,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:25:30,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:25:30,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:25:30,013 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:25:30,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/../../sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-29 19:25:30,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/ece4ad6ea/81622ee68e354569b12ddb641554bd5c/FLAG892af2bea [2020-11-29 19:25:30,718 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:25:30,719 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-29 19:25:30,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/ece4ad6ea/81622ee68e354569b12ddb641554bd5c/FLAG892af2bea [2020-11-29 19:25:30,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/ece4ad6ea/81622ee68e354569b12ddb641554bd5c [2020-11-29 19:25:30,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:25:30,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:25:30,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:30,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:25:31,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:25:31,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:30" (1/1) ... [2020-11-29 19:25:31,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f685dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31, skipping insertion in model container [2020-11-29 19:25:31,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:30" (1/1) ... [2020-11-29 19:25:31,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:25:31,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:25:31,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:31,577 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:25:31,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:31,754 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:25:31,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31 WrapperNode [2020-11-29 19:25:31,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:31,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:25:31,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:25:31,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:25:31,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:25:31,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:25:31,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:25:31,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:25:31,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:25:31,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:25:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 19:25:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 19:25:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 19:25:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 19:25:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 19:25:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 19:25:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 19:25:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:25:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 19:25:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 19:25:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 19:25:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 19:25:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 19:25:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:25:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 19:25:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 19:25:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 19:25:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 19:25:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 19:25:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 19:25:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 19:25:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 19:25:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 19:25:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 19:25:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 19:25:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 19:25:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 19:25:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 19:25:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 19:25:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 19:25:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 19:25:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 19:25:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 19:25:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 19:25:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 19:25:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 19:25:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 19:25:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 19:25:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 19:25:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 19:25:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 19:25:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 19:25:31,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 19:25:31,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 19:25:31,952 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 19:25:31,952 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 19:25:31,952 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 19:25:31,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 19:25:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 19:25:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 19:25:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 19:25:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 19:25:31,953 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 19:25:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 19:25:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 19:25:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 19:25:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 19:25:31,954 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 19:25:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 19:25:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 19:25:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 19:25:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 19:25:31,955 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 19:25:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 19:25:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 19:25:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 19:25:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 19:25:31,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 19:25:31,957 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 19:25:31,957 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 19:25:31,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 19:25:31,957 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 19:25:31,957 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 19:25:31,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 19:25:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 19:25:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 19:25:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 19:25:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 19:25:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 19:25:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 19:25:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 19:25:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 19:25:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 19:25:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 19:25:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 19:25:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 19:25:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 19:25:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 19:25:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 19:25:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 19:25:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 19:25:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 19:25:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 19:25:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 19:25:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 19:25:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 19:25:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 19:25:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 19:25:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 19:25:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 19:25:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 19:25:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 19:25:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 19:25:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 19:25:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 19:25:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 19:25:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 19:25:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 19:25:31,977 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 19:25:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 19:25:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 19:25:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 19:25:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 19:25:31,978 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 19:25:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 19:25:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 19:25:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 19:25:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 19:25:31,979 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 19:25:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 19:25:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 19:25:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 19:25:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:25:31,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:25:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:25:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:25:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:25:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:25:31,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:25:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:25:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:25:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:25:32,555 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 19:25:32,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:25:32,875 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 19:25:32,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:32 BoogieIcfgContainer [2020-11-29 19:25:32,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:25:32,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:25:32,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:25:32,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:25:32,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:25:30" (1/3) ... [2020-11-29 19:25:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1945bffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:32, skipping insertion in model container [2020-11-29 19:25:32,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (2/3) ... [2020-11-29 19:25:32,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1945bffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:32, skipping insertion in model container [2020-11-29 19:25:32,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:32" (3/3) ... [2020-11-29 19:25:32,900 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-11-29 19:25:32,917 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:25:32,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-11-29 19:25:32,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-11-29 19:25:32,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:25:32,973 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:25:32,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:25:32,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:25:32,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:25:32,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:25:32,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:25:32,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:25:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-11-29 19:25:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:33,010 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:33,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:33,011 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]=== [2020-11-29 19:25:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash 884508361, now seen corresponding path program 1 times [2020-11-29 19:25:33,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:33,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148120736] [2020-11-29 19:25:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:25:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:33,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148120736] [2020-11-29 19:25:33,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:33,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:25:33,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898534050] [2020-11-29 19:25:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:25:33,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:33,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:25:33,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:25:33,352 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-11-29 19:25:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:33,650 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-11-29 19:25:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:25:33,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 19:25:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:33,661 INFO L225 Difference]: With dead ends: 64 [2020-11-29 19:25:33,661 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 19:25:33,663 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 [2020-11-29 19:25:33,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 19:25:33,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-29 19:25:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 19:25:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-11-29 19:25:33,711 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 10 [2020-11-29 19:25:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:33,712 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-11-29 19:25:33,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:25:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-11-29 19:25:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:25:33,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:33,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:33,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:25:33,714 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]=== [2020-11-29 19:25:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921759, now seen corresponding path program 1 times [2020-11-29 19:25:33,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:33,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875688991] [2020-11-29 19:25:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:25:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:33,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875688991] [2020-11-29 19:25:33,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:33,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:25:33,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002484703] [2020-11-29 19:25:33,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:25:33,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:25:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:25:33,882 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-11-29 19:25:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:34,208 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-11-29 19:25:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:25:34,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 19:25:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:34,212 INFO L225 Difference]: With dead ends: 65 [2020-11-29 19:25:34,212 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 19:25:34,213 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 [2020-11-29 19:25:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 19:25:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-11-29 19:25:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 19:25:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-11-29 19:25:34,231 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2020-11-29 19:25:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:34,231 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-11-29 19:25:34,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:25:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-11-29 19:25:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:25:34,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:34,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:34,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:25:34,235 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]=== [2020-11-29 19:25:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:34,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921760, now seen corresponding path program 1 times [2020-11-29 19:25:34,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:34,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690263104] [2020-11-29 19:25:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:34,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 19:25:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:34,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690263104] [2020-11-29 19:25:34,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:34,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:25:34,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101033446] [2020-11-29 19:25:34,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:25:34,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:34,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:25:34,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:25:34,461 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2020-11-29 19:25:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:34,754 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-11-29 19:25:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:25:34,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 19:25:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:34,757 INFO L225 Difference]: With dead ends: 77 [2020-11-29 19:25:34,757 INFO L226 Difference]: Without dead ends: 77 [2020-11-29 19:25:34,758 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 [2020-11-29 19:25:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-29 19:25:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-11-29 19:25:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-29 19:25:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-11-29 19:25:34,772 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 11 [2020-11-29 19:25:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:34,773 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-11-29 19:25:34,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:25:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-11-29 19:25:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:25:34,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:34,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:34,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:25:34,775 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]=== [2020-11-29 19:25:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:34,775 INFO L82 PathProgramCache]: Analyzing trace with hash -590364418, now seen corresponding path program 1 times [2020-11-29 19:25:34,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:34,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890169160] [2020-11-29 19:25:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:34,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:34,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:34,942 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:25:34,942 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:25:34,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:25:34,966 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 19:25:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:25:34 BoogieIcfgContainer [2020-11-29 19:25:34,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:25:34,992 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:25:34,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:25:34,993 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:25:34,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:32" (3/4) ... [2020-11-29 19:25:34,999 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:25:34,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:25:35,001 INFO L168 Benchmark]: Toolchain (without parser) took 4005.43 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 94.0 MB in the beginning and 99.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:35,002 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 44.7 MB in the beginning and 44.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:35,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.91 ms. Allocated memory is still 121.6 MB. Free memory was 94.0 MB in the beginning and 86.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:35,004 INFO L168 Benchmark]: Boogie Preprocessor took 100.02 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 84.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:35,004 INFO L168 Benchmark]: RCFGBuilder took 1019.78 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 73.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:35,006 INFO L168 Benchmark]: TraceAbstraction took 2108.51 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 72.9 MB in the beginning and 99.3 MB in the end (delta: -26.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:35,006 INFO L168 Benchmark]: Witness Printer took 6.94 ms. Allocated memory is still 167.8 MB. Free memory is still 99.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:35,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 44.7 MB in the beginning and 44.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.91 ms. Allocated memory is still 121.6 MB. Free memory was 94.0 MB in the beginning and 86.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.02 ms. Allocated memory is still 121.6 MB. Free memory was 86.8 MB in the beginning and 84.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1019.78 ms. Allocated memory is still 121.6 MB. Free memory was 84.1 MB in the beginning and 73.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2108.51 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 72.9 MB in the beginning and 99.3 MB in the end (delta: -26.4 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.94 ms. Allocated memory is still 167.8 MB. Free memory is still 99.3 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=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: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.4s 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-a4ecdab [2020-11-29 19:25:38,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:25:38,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:25:38,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:25:38,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:25:38,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:25:38,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:25:38,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:25:38,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:25:38,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:25:38,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:25:38,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:25:38,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:25:38,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:25:38,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:25:38,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:25:38,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:25:38,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:25:38,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:25:38,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:25:38,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:25:38,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:25:38,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:25:38,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:25:38,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:25:38,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:25:38,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:25:38,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:25:38,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:25:38,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:25:38,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:25:38,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:25:38,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:25:38,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:25:38,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:25:38,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:25:38,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:25:38,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:25:38,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:25:38,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:25:38,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:25:38,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-29 19:25:38,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:25:38,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:25:38,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:25:38,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:25:38,309 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:25:38,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:25:38,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:25:38,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:25:38,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:25:38,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:25:38,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:25:38,312 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:25:38,312 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:25:38,312 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:25:38,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:25:38,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 19:25:38,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:25:38,314 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:25:38,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:25:38,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:25:38,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:25:38,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:25:38,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:25:38,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:25:38,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:25:38,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:25:38,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:25:38,316 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:25:38,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:25:38,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:25:38,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:25:38,318 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:/tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2748dac41bc6cdd06fa5d8793326edbc7d40c79 [2020-11-29 19:25:38,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:25:38,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:25:38,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:25:38,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:25:38,887 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:25:38,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/../../sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-29 19:25:38,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/774734aca/7081a6659a13475db0e51310cbdc79a2/FLAG423e277a5 [2020-11-29 19:25:39,813 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:25:39,814 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/sv-benchmarks/c/list-properties/list_flag-2.i [2020-11-29 19:25:39,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/774734aca/7081a6659a13475db0e51310cbdc79a2/FLAG423e277a5 [2020-11-29 19:25:40,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/data/774734aca/7081a6659a13475db0e51310cbdc79a2 [2020-11-29 19:25:40,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:25:40,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 19:25:40,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:40,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:25:40,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:25:40,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:40,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd95637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40, skipping insertion in model container [2020-11-29 19:25:40,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:40,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:25:40,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:25:40,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:40,773 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:25:40,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:40,964 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:25:40,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40 WrapperNode [2020-11-29 19:25:40,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:40,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:25:40,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:25:40,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:25:40,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:40,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... [2020-11-29 19:25:41,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:25:41,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:25:41,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:25:41,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:25:41,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 19:25:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:25:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-11-29 19:25:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 19:25:41,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 19:25:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 19:25:41,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 19:25:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-29 19:25:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-29 19:25:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 19:25:41,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-29 19:25:41,132 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-29 19:25:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-29 19:25:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-29 19:25:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-29 19:25:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-29 19:25:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-29 19:25:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-29 19:25:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-29 19:25:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-29 19:25:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-29 19:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-29 19:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-29 19:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-29 19:25:41,153 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-29 19:25:41,154 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-29 19:25:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-29 19:25:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-29 19:25:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-29 19:25:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-29 19:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-29 19:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 19:25:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-29 19:25:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-29 19:25:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:25:41,729 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 19:25:42,203 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:25:42,204 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-29 19:25:42,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:42 BoogieIcfgContainer [2020-11-29 19:25:42,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:25:42,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:25:42,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:25:42,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:25:42,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:25:40" (1/3) ... [2020-11-29 19:25:42,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f4f488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:42, skipping insertion in model container [2020-11-29 19:25:42,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:40" (2/3) ... [2020-11-29 19:25:42,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f4f488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:42, skipping insertion in model container [2020-11-29 19:25:42,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:42" (3/3) ... [2020-11-29 19:25:42,223 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2020-11-29 19:25:42,237 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:25:42,243 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-11-29 19:25:42,257 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-11-29 19:25:42,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:25:42,299 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 19:25:42,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:25:42,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:25:42,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:25:42,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:25:42,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:25:42,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:25:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-29 19:25:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:42,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:42,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:42,336 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]=== [2020-11-29 19:25:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1710436202, now seen corresponding path program 1 times [2020-11-29 19:25:42,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:42,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81254484] [2020-11-29 19:25:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:42,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:25:42,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:42,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:42,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81254484] [2020-11-29 19:25:42,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:42,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:25:42,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558281510] [2020-11-29 19:25:42,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:25:42,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:25:42,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:42,669 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-11-29 19:25:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:42,691 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-29 19:25:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:25:42,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:25:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:42,701 INFO L225 Difference]: With dead ends: 63 [2020-11-29 19:25:42,701 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 19:25:42,703 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 [2020-11-29 19:25:42,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 19:25:42,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 19:25:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 19:25:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-29 19:25:42,747 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 10 [2020-11-29 19:25:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:42,747 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-29 19:25:42,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:25:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-29 19:25:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:42,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:42,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:42,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:25:42,965 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]=== [2020-11-29 19:25:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435241, now seen corresponding path program 1 times [2020-11-29 19:25:42,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:42,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394984741] [2020-11-29 19:25:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:43,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:25:43,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:43,271 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 [2020-11-29 19:25:43,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:25:43,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:25:43,277 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:25:43,277 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-29 19:25:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:43,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:43,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394984741] [2020-11-29 19:25:43,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:43,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 19:25:43,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378049362] [2020-11-29 19:25:43,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:25:43,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:25:43,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:25:43,332 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 4 states. [2020-11-29 19:25:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:43,702 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-29 19:25:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:25:43,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:25:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:43,707 INFO L225 Difference]: With dead ends: 63 [2020-11-29 19:25:43,707 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 19:25:43,708 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 [2020-11-29 19:25:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 19:25:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2020-11-29 19:25:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-29 19:25:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-11-29 19:25:43,730 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 10 [2020-11-29 19:25:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:43,731 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-11-29 19:25:43,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:25:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-11-29 19:25:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:43,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:43,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:43,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:25:43,953 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]=== [2020-11-29 19:25:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1710435242, now seen corresponding path program 1 times [2020-11-29 19:25:43,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:43,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077438884] [2020-11-29 19:25:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:44,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:25:44,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:44,202 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 [2020-11-29 19:25:44,203 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:25:44,220 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:25:44,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:25:44,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-29 19:25:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:44,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:44,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077438884] [2020-11-29 19:25:44,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:44,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 19:25:44,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894446977] [2020-11-29 19:25:44,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:25:44,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:44,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:25:44,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:25:44,437 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-11-29 19:25:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:45,042 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-11-29 19:25:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:25:45,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 19:25:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:45,045 INFO L225 Difference]: With dead ends: 74 [2020-11-29 19:25:45,046 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 19:25:45,046 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 [2020-11-29 19:25:45,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 19:25:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-11-29 19:25:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 19:25:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-11-29 19:25:45,056 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 10 [2020-11-29 19:25:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:45,057 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-11-29 19:25:45,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:25:45,057 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-11-29 19:25:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:25:45,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:45,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:45,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:25:45,284 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]=== [2020-11-29 19:25:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:45,285 INFO L82 PathProgramCache]: Analyzing trace with hash -544900418, now seen corresponding path program 1 times [2020-11-29 19:25:45,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:45,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757596439] [2020-11-29 19:25:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_28b5a660-f3a4-4f36-8ca0-c891516f35d7/bin/uautomizer/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 [2020-11-29 19:25:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:45,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:45,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:45,670 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:25:45,686 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:25:45,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:25:45,900 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-11-29 19:25:45,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:25:45 BoogieIcfgContainer [2020-11-29 19:25:45,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:25:45,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:25:45,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:25:45,925 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:25:45,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:42" (3/4) ... [2020-11-29 19:25:45,930 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:25:45,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:25:45,932 INFO L168 Benchmark]: Toolchain (without parser) took 5864.36 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 49.1 MB in the beginning and 55.9 MB in the end (delta: -6.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:45,933 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:45,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 895.22 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 42.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:45,935 INFO L168 Benchmark]: Boogie Preprocessor took 86.10 ms. Allocated memory is still 71.3 MB. Free memory was 42.3 MB in the beginning and 39.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:45,936 INFO L168 Benchmark]: RCFGBuilder took 1156.04 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 39.1 MB in the beginning and 64.5 MB in the end (delta: -25.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:45,937 INFO L168 Benchmark]: TraceAbstraction took 3711.68 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 64.1 MB in the beginning and 55.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:45,938 INFO L168 Benchmark]: Witness Printer took 5.37 ms. Allocated memory is still 104.9 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:45,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 33.7 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 895.22 ms. Allocated memory is still 71.3 MB. Free memory was 48.8 MB in the beginning and 42.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.10 ms. Allocated memory is still 71.3 MB. Free memory was 42.3 MB in the beginning and 39.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1156.04 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 39.1 MB in the beginning and 64.5 MB in the end (delta: -25.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3711.68 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 64.1 MB in the beginning and 55.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.37 ms. Allocated memory is still 104.9 MB. Free memory is still 55.9 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: 3.5s, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s 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...